C++の練習を兼ねて, AtCoder Regular Contest 153 の 問題A (AABCDDEFE) ~ 問題B (Grid Rotations) を解いてみた.
■感想.
1. 問題B は, 方針が見えなかったので, 解説を参考に, AC版に到達できたと思う.
2. 個人的には, 解説のロジックで, 操作後のグリッドの状態が分かる点が, 非常に不思議な印象を受けた.
3. 引き続き, 時間を見つけて, 過去問の学習を進めていきたいと思う.
本家のサイト AtCoder Regular Contest 153 解説 の 各リンク を ご覧下さい.
■C++版プログラム(問題A/AC版).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 |
// C++(GCC 9.2.1) #include <bits/stdc++.h> using namespace std; #define repex(i, a, b, c) for(int i = a; i < b; i += c) #define repx(i, a, b) repex(i, a, b, 1) #define rep(i, n) repx(i, 0, n) #define repr(i, a, b) for(int i = a; i >= b; i--) int main(){ // 1. 入力情報. int N; scanf("%d", &N); // 2. 全探索. int idx = 0; repx(s12, 1, 10){ rep(s3, 10){ rep(s4, 10){ rep(s56, 10){ rep(s79, 10){ rep(s8, 10){ // 見つかった. if(++idx == N){ int ans = 0; ans += 1e8 * s12; ans += 1e7 * s12; ans += 1e6 * s3; ans += 1e5 * s4; ans += 1e4 * s56; ans += 1e3 * s56; ans += 1e2 * s79; ans += 1e1 * s8; ans += 1e0 * s79; // 出力. printf("%d\n", ans); return 0; } } } } } } } return 0; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 |
[入力例] 3 [出力例] 110000020 ※AtCoderのテストケースより [入力例] 882436 [出力例] 998244353 ※AtCoderのテストケースより [入力例] 2023 [出力例] 110200222 ※AtCoderのテストケースより [入力例] 321 [出力例] 110033202 [入力例] 31415 [出力例] 113144141 [入力例] 900000 [出力例] 999999999 |
■C++版プログラム(問題B/AC版).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 |
// 解き直し. // https://atcoder.jp/contests/arc153/editorial/5484 // C++(GCC 9.2.1) #include <bits/stdc++.h> using namespace std; using vi = vector<int>; using vs = vector<string>; using P = pair<int, int>; using vp = vector<P>; #define repex(i, a, b, c) for(int i = a; i < b; i += c) #define repx(i, a, b) repex(i, a, b, 1) #define rep(i, n) repx(i, 0, n) #define repr(i, a, b) for(int i = a; i >= b; i--) #define pb push_back #define a first #define b second int main(){ // 1. 入力情報. int H, W; scanf("%d %d", &H, &W); vs grid(H); rep(i, H){ char c[W + 1]; scanf("%s", c); string s(c); grid[i] = s; } // 2. 長方形に含まれるか? auto f = [&](P p, int sx, int sy, int gx, int gy) -> bool { return (p.a >= sx && p.b >= sy && p.a <= gx && p.b <= gy); }; // 3. クエリ. // -> 長方形領域 に応じて, 移動先更新. // 左上: [1, 1] ~ [a, b] // 左下: [a + 1, 1] ~ [H, b] // 右上: [1, b + 1] ~ [a, W] // 右下: [a + 1, b + 1] ~ [H, W] int Q; scanf("%d", &Q); vp g; g.pb({1, 1}); // [1, 1]. g.pb({1, 2}); // [1, 2]. g.pb({2, 1}); // [2, 1]. rep(i, Q){ // 3-1. クエリ入力情報. int a, b; scanf("%d %d", &a, &b); // 3-2. [1, 1], [1, 2], [2, 1]. rep(j, 3){ int tx = 0; int ty = 0; // 左上. if(f(g[j], 1, 1, a, b)){ tx = a + 1; ty = b + 1; } // 左下. if(f(g[j], a + 1, 1, H, b)){ tx = H + a + 1; ty = b + 1; } // 右上. if(f(g[j], 1, b + 1, a, W)){ tx = a + 1; ty = W + b + 1; } // 右下. if(f(g[j], a + 1, b + 1, H, W)){ tx = H + a + 1; ty = W + b + 1; } // 移動. g[j].a = tx - g[j].a; g[j].b = ty - g[j].b; } } // 4. 移動先(数列). // 4-1. 行方向. vi wSequence(W); wSequence[0] = g[0].b; wSequence[1] = g[1].b; repx(i, 2, W){ wSequence[i] = wSequence[i - 1]; wSequence[i] += (wSequence[i - 1] - wSequence[i - 2]); wSequence[i] += W; wSequence[i] %= W; if(wSequence[i] == 0) wSequence[i] = W; } // 4-2. 列方向. vi hSequence(H); hSequence[0] = g[0].a; hSequence[1] = g[2].a; repx(i, 2, H){ hSequence[i] = hSequence[i - 1]; hSequence[i] += (hSequence[i - 1] - hSequence[i - 2]); hSequence[i] += H; hSequence[i] %= H; if(hSequence[i] == 0) hSequence[i] = H; } // 5. 変化後のグリッド. vs ans(H); rep(i, H){ string s(W, '.'); rep(j, W) s[wSequence[j] - 1] = grid[i][j]; ans[hSequence[i] - 1] = s; } // 6. 出力. rep(i, H) printf("%s\n", ans[i].c_str()); return 0; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 |
[入力例] 4 5 abcde fghij klmno pqrst 1 3 3 [出力例] mlkon hgfji cbaed rqpts ※AtCoderのテストケースより [入力例] 3 7 atcoder regular contest 2 1 1 2 5 [出力例] testcon oderatc ularreg ※AtCoderのテストケースより [入力例] 2 2 ac wa 3 1 1 1 1 1 1 [出力例] ac wa ※AtCoderのテストケースより [入力例] 5 6 abcdef ghijkl mnopqr stuvwx yzabcd 3 1 3 2 3 4 5 [出力例] qponmr kjihgl edcbaf cbazyd wvutsx [入力例] 10 13 tgaiplwcarqvr jcbxsaceowkvr zlgfizldbdykc wsuiehmwxgenk yennclmvitqyj cvbgnfgiijfaw caoenyfbixzjw hcuhogtbdlrzx mmlpsutxgfoyf yxgeoakdybqbj 5 9 2 7 5 6 1 4 9 1 11 [出力例] jyqtivmlcnney knegxwmheiusw ckydbdlzifglz rvkwoecasxbcj rvqracwlpiagt jbqbydkaoegxy fyofgxtusplmm xzrldbtgohuch wjzxibfyneoac wafjiigfngbvc [入力例] 30 30 zlfuxyhbmlafcmykqjhqfxzdpsdcye hrburupmvtcxigyaheuaxyhaledflw slnzchgsigwtagnqwjalonbdqddidq htifmgawdkraswqobqdxuppvlomrmj kwmvtcmlgholgztnxkfcufzovxbjtl zrvjaxarsqtvxjkydqwbekjagdmraf oaxenrkklngmbfwqflmjdwfppricbu wnjxgpujanfmwlvflmctkqyeozhcaf nvzgzmqoeagdrkasjiwxoxrcszjlfo dirylpnobhsbxkwwxxaqjkxzdyddsi yyawndqdhiibtouonhcqdvyhftmnyh lfyvkxbjhupgjkyqwaxgjdugewoetm ihaylrvcegejtbyupofjxogkcbgfho kqokpfokthlimtvbwjfnpjdaeqinms adxzqrgfgkiwacfsbrioomsmpwyybc mdewbkbcfftilrprxcecxbwxejblwt qfstklfwvwahvammwujyvzscthwymn wvlopkalgkdyiqddzgtkwvesaqtnbj alywjbfosqktwtwfiezxgtnggnisua vslitdjcgldturboqianadtpsbeyos bplursgzyryyqgrjznhfniumiswjbk xpihoeznhbhmzakkkpknxoklgysnvl xbarzttrjwzmmqxaavyycwbaajdrhf qfvcjkvtprjbocnbkbateqhtphjrbc vccdtqjrcoqepwrznmmhylqkopgysr tmaamlgdfxohtmyprpmwgjelbhmqnm uvxqkuholicwvhbzqcumbvwqigirga kjsqvscvzscucztmylttcrhymwnjnw dokiptkkeccxbqiqdoldqciivfcnrr gixxzovfgymntqbyhxenzkqwnvttkz 20 23 5 17 3 9 27 22 21 5 7 2 23 28 26 14 17 3 22 25 23 16 25 6 1 1 14 21 4 11 1 17 15 25 9 10 5 5 26 15 12 [出力例] anfmwlvflmctkqyeozhcafwnjxgpuj eagdrkasjiwxoxrcszjlfonvzgzmqo bhsbxkwwxxaqjkxzdyddsidirylpno hiibtouonhcqdvyhftmnyhyyawndqd hupgjkyqwaxgjdugewoetmlfyvkxbj egejtbyupofjxogkcbgfhoihaylrvc thlimtvbwjfnpjdaeqinmskqokpfok gkiwacfsbrioomsmpwyybcadxzqrgf fftilrprxcecxbwxejblwtmdewbkbc vwahvammwujyvzscthwymnqfstklfw gkdyiqddzgtkwvesaqtnbjwvlopkal sqktwtwfiezxgtnggnisuaalywjbfo gldturboqianadtpsbeyosvslitdjc yryyqgrjznhfniumiswjbkbplursgz hbhmzakkkpknxoklgysnvlxpihoezn jwzmmqxaavyycwbaajdrhfxbarzttr prjbocnbkbateqhtphjrbcqfvcjkvt coqepwrznmmhylqkopgysrvccdtqjr fxohtmyprpmwgjelbhmqnmtmaamlgd licwvhbzqcumbvwqigirgauvxqkuho zscucztmylttcrhymwnjnwkjsqvscv eccxbqiqdoldqciivfcnrrdokiptkk gymntqbyhxenzkqwnvttkzgixxzovf mlafcmykqjhqfxzdpsdcyezlfuxyhb vtcxigyaheuaxyhaledflwhrburupm igwtagnqwjalonbdqddidqslnzchgs dkraswqobqdxuppvlomrmjhtifmgaw gholgztnxkfcufzovxbjtlkwmvtcml sqtvxjkydqwbekjagdmrafzrvjaxar lngmbfwqflmjdwfppricbuoaxenrkk [入力例] 52 48 lxlxtoqsbdwfdenrehhlxnkvjumbrxwmtxprxwyugjimgbji erjcoskytrgpqzaraddmwodsvscwulesyzgtuzzkpdmfxmhb chbzvmbejqrcdyfaoqdrgvuammogozyhfisgvmdcoxttgagq hubeegribiqattvugiwmxmwlcejhjcjkcjgwsqaumwlyrfdj unadargbnpgyweimzhpqhrbwrrguybjgdtuhhraumoitgsao lwzvmfosvxitavjqndyorcyukgcftvkqqdfnggewbeerfwti aawgpuptpkhzrfpifwwpoohcwwtymrfsrpkrkosgyeyhltfb vyurxgwrullponlprhwlzfkhlcqlklfexaxiifgbobeldxbq zdxkjwfsegioeungcovdyualkxyelomuxwvkhhwcmpdeanzl fyomqrvqbdqmsjxcssudrlegffshqnkwqgqxpzfckaxjufzq jsxdokejmvuwskvwbycvguuggeaickgrvzmvbduyrbikxsor jmykcdmgnvprdorzybaywujgejdcwyyffskfeklhwknljzmw kiqdzzmkmohemdvdufanplcpegzmifbglrgmzhgtqkxopnju kgfwvaywkqmvhtpbrpfobvlkjhyfvigvlevliaomftqozsbg equiujwjhmgochzbiofmyydkfzpezzsfhutloufttghngrru kzsmxdflbikkpozwkxnxivtzshqdlwyifmtxnwupunpzvscr jahbemkkcygkpaggvgavayukjahelvygxdiwigzzjyyevcao mdutvyjhttvyumjeruphqnvuafzgjzrcgbimlkhodruxbteb bpisbtkcwhchfkfnnnefgzosywmbplaopbodpgyqvwizplia sydrenukpkhyppxktfgfyzivhusojbgcfukoygdjcispndup tgwmkmnzchpzjkmggtbuehhshxmcvtbtcagoqzjszqmrnuee mqrwouubcfoagowizqhlccnwbcbkryvjdqobvfyltenznord uqaxyusonbitwhrkkkvmhekyywzjoibllpgjtdpczatddopw lcquihmsadgtavenochpfyierpsxbvvamhlcthsdqwqnwlby xtxbfvcvbsvwvuupalwtiiilyhjllnbvvkxcnfjnzlenoyia cvrbshwnizyiveifxxowvmozvzeafuknjnfqcpyvrnjofwgk ygteuwgssebxxqbqsbvaqxchumnpvigsddziqibmhmuokkbl jqvzvcjtdzibcydvvzzsvqztpxpolykyeqqmgxysmcunsjnl uaifshzswrtrkmlbxyyijabyriiixbqtkhqyhivjqpxxicmw obcwicfyykytmcxjzakqmcriynogsgnrzwaeodwsxehmhylz uahlbfgxweehpxojmlhmbfxndcqaajdtufqgdviewyyzfdly idibsmuxajsqbaxfntwsmulbaamewgidomnpqefgqtddzmhr iudojjrllxuvlzdhhxtaaytvrmpnktqnqeiojicpzpoaevvy upjmiltejgkjetgkvghutkdkceaxishfgmzuiomvebwpggyg ytciareyacgpzahojsnmeefgmejnbkdmfvfevrcusixxrhvy mgmqpggclwdrahwhnvvfhracslfdfcnznqchtbfccudtxstp orrlcabaojdkzugdwrykqczajajrvanztteqtorwxobswsdp hmppoywettruxbnyoyptnjtaguomgeofmzxfbfsvzqytthai ttagnjemvmbnsktmvnfpeqzvmzglihrjbdprwalohkgikvav schyfaaprwhbjczunxxxdxddqfttsofpljmgalsmxvoexmqd vzozqxfovtqjupmiedlhecmkprtqycnmysjaoaksfvdwttqn skhepqlccwjlviqoaalbtnmjxqafhjznvxjkhzuttpyqvzrw idlqhyaqcoakhpwcwxugojivjdkydgoddhgopnnogvnmeoae hjpnpgbrrzrohcwreopuvyjtjziljpurxicehhgneaypqope vafoxkalfrusbqdzamjymuxolsgmrzppiifkzdyneowydwhn jyjboemrurvbkhdhfbwnfbcrpwzltezgancinrubccundjxf khvoazsbaqdinovvorxdegprddxakqxfngyoqtbsfpqswjlt zbgamiwcmlvaxygqtayhswdsydxwkfxdovkpjetcwqfetvva svdxixguxpxzqninvmjjgdofjumrvhpxhfhikcsbnhjmrhen qhatbwrxkhfkhagtcyyloujqmaypfswjhdoadhicgjgvftza leotrrtptulbmrksovqfamkussnjvyhtleqaksjshxgakofj lordtneuohncjxxtcsxgtcudidzhozuetlnibqbclkjvtkry 50 42 29 48 44 2 21 28 27 16 42 50 21 44 42 45 25 29 21 31 35 1 23 3 19 27 7 25 28 30 2 16 23 10 12 25 43 9 20 17 43 12 36 37 15 36 31 17 24 2 37 3 45 16 20 23 24 18 29 9 17 34 7 29 34 10 27 13 5 24 42 32 42 41 22 12 4 36 40 21 17 10 13 13 24 44 34 14 37 40 9 5 32 9 30 25 44 38 27 23 24 [出力例] kjahelvygxdiwigzzjyyevcaojahbemkkcygkpaggvgavayu uafzgjzrcgbimlkhodruxbtebmdutvyjhttvyumjeruphqnv sywmbplaopbodpgyqvwizpliabpisbtkcwhchfkfnnnefgzo vhusojbgcfukoygdjcispndupsydrenukpkhyppxktfgfyzi shxmcvtbtcagoqzjszqmrnueetgwmkmnzchpzjkmggtbuehh wbcbkryvjdqobvfyltenznordmqrwouubcfoagowizqhlccn yywzjoibllpgjtdpczatddopwuqaxyusonbitwhrkkkvmhek erpsxbvvamhlcthsdqwqnwlbylcquihmsadgtavenochpfyi lyhjllnbvvkxcnfjnzlenoyiaxtxbfvcvbsvwvuupalwtiii zvzeafuknjnfqcpyvrnjofwgkcvrbshwnizyiveifxxowvmo humnpvigsddziqibmhmuokkblygteuwgssebxxqbqsbvaqxc tpxpolykyeqqmgxysmcunsjnljqvzvcjtdzibcydvvzzsvqz yriiixbqtkhqyhivjqpxxicmwuaifshzswrtrkmlbxyyijab iynogsgnrzwaeodwsxehmhylzobcwicfyykytmcxjzakqmcr ndcqaajdtufqgdviewyyzfdlyuahlbfgxweehpxojmlhmbfx baamewgidomnpqefgqtddzmhridibsmuxajsqbaxfntwsmul vrmpnktqnqeiojicpzpoaevvyiudojjrllxuvlzdhhxtaayt kceaxishfgmzuiomvebwpggygupjmiltejgkjetgkvghutkd gmejnbkdmfvfevrcusixxrhvyytciareyacgpzahojsnmeef cslfdfcnznqchtbfccudtxstpmgmqpggclwdrahwhnvvfhra ajajrvanztteqtorwxobswsdporrlcabaojdkzugdwrykqcz aguomgeofmzxfbfsvzqytthaihmppoywettruxbnyoyptnjt vmzglihrjbdprwalohkgikvavttagnjemvmbnsktmvnfpeqz dqfttsofpljmgalsmxvoexmqdschyfaaprwhbjczunxxxdxd kprtqycnmysjaoaksfvdwttqnvzozqxfovtqjupmiedlhecm jxqafhjznvxjkhzuttpyqvzrwskhepqlccwjlviqoaalbtnm vjdkydgoddhgopnnogvnmeoaeidlqhyaqcoakhpwcwxugoji tjziljpurxicehhgneaypqopehjpnpgbrrzrohcwreopuvyj olsgmrzppiifkzdyneowydwhnvafoxkalfrusbqdzamjymux rpwzltezgancinrubccundjxfjyjboemrurvbkhdhfbwnfbc rddxakqxfngyoqtbsfpqswjltkhvoazsbaqdinovvorxdegp sydxwkfxdovkpjetcwqfetvvazbgamiwcmlvaxygqtayhswd fjumrvhpxhfhikcsbnhjmrhensvdxixguxpxzqninvmjjgdo qmaypfswjhdoadhicgjgvftzaqhatbwrxkhfkhagtcyylouj ussnjvyhtleqaksjshxgakofjleotrrtptulbmrksovqfamk didzhozuetlnibqbclkjvtkrylordtneuohncjxxtcsxgtcu vjumbrxwmtxprxwyugjimgbjilxlxtoqsbdwfdenrehhlxnk svscwulesyzgtuzzkpdmfxmhberjcoskytrgpqzaraddmwod ammogozyhfisgvmdcoxttgagqchbzvmbejqrcdyfaoqdrgvu lcejhjcjkcjgwsqaumwlyrfdjhubeegribiqattvugiwmxmw wrrguybjgdtuhhraumoitgsaounadargbnpgyweimzhpqhrb ukgcftvkqqdfnggewbeerfwtilwzvmfosvxitavjqndyorcy cwwtymrfsrpkrkosgyeyhltfbaawgpuptpkhzrfpifwwpooh hlcqlklfexaxiifgbobeldxbqvyurxgwrullponlprhwlzfk lkxyelomuxwvkhhwcmpdeanzlzdxkjwfsegioeungcovdyua gffshqnkwqgqxpzfckaxjufzqfyomqrvqbdqmsjxcssudrle ggeaickgrvzmvbduyrbikxsorjsxdokejmvuwskvwbycvguu gejdcwyyffskfeklhwknljzmwjmykcdmgnvprdorzybaywuj pegzmifbglrgmzhgtqkxopnjukiqdzzmkmohemdvdufanplc kjhyfvigvlevliaomftqozsbgkgfwvaywkqmvhtpbrpfobvl kfzpezzsfhutloufttghngrruequiujwjhmgochzbiofmyyd zshqdlwyifmtxnwupunpzvscrkzsmxdflbikkpozwkxnxivt |
■参照サイト
AtCoder Regular Contest 153