結果
問題 | No.421 しろくろチョコレート |
ユーザー | alpha_virginis |
提出日時 | 2016-09-10 01:24:53 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 38 ms / 2,000 ms |
コード長 | 4,302 bytes |
コンパイル時間 | 1,746 ms |
コンパイル使用メモリ | 177,592 KB |
実行使用メモリ | 56,592 KB |
最終ジャッジ日時 | 2024-09-23 07:08:01 |
合計ジャッジ時間 | 4,021 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 3 ms
5,248 KB |
testcase_01 | AC | 20 ms
21,504 KB |
testcase_02 | AC | 9 ms
10,112 KB |
testcase_03 | AC | 5 ms
6,144 KB |
testcase_04 | AC | 8 ms
8,576 KB |
testcase_05 | AC | 8 ms
9,600 KB |
testcase_06 | AC | 5 ms
6,400 KB |
testcase_07 | AC | 14 ms
15,616 KB |
testcase_08 | AC | 8 ms
9,472 KB |
testcase_09 | AC | 7 ms
7,552 KB |
testcase_10 | AC | 7 ms
7,680 KB |
testcase_11 | AC | 14 ms
16,256 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 3 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 29 ms
30,976 KB |
testcase_17 | AC | 28 ms
31,488 KB |
testcase_18 | AC | 29 ms
32,000 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 21 ms
23,552 KB |
testcase_21 | AC | 25 ms
26,240 KB |
testcase_22 | AC | 15 ms
16,512 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 3 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 18 ms
21,120 KB |
testcase_29 | AC | 22 ms
25,088 KB |
testcase_30 | AC | 19 ms
22,144 KB |
testcase_31 | AC | 37 ms
43,008 KB |
testcase_32 | AC | 21 ms
23,680 KB |
testcase_33 | AC | 21 ms
23,296 KB |
testcase_34 | AC | 5 ms
6,528 KB |
testcase_35 | AC | 5 ms
6,912 KB |
testcase_36 | AC | 14 ms
16,128 KB |
testcase_37 | AC | 29 ms
30,464 KB |
testcase_38 | AC | 34 ms
35,584 KB |
testcase_39 | AC | 12 ms
13,952 KB |
testcase_40 | AC | 19 ms
20,736 KB |
testcase_41 | AC | 9 ms
9,472 KB |
testcase_42 | AC | 7 ms
8,448 KB |
testcase_43 | AC | 13 ms
15,104 KB |
testcase_44 | AC | 26 ms
26,752 KB |
testcase_45 | AC | 8 ms
9,344 KB |
testcase_46 | AC | 8 ms
9,472 KB |
testcase_47 | AC | 17 ms
19,328 KB |
testcase_48 | AC | 34 ms
56,592 KB |
testcase_49 | AC | 16 ms
37,264 KB |
testcase_50 | AC | 9 ms
10,368 KB |
testcase_51 | AC | 24 ms
25,856 KB |
testcase_52 | AC | 14 ms
15,232 KB |
testcase_53 | AC | 7 ms
7,808 KB |
testcase_54 | AC | 9 ms
10,496 KB |
testcase_55 | AC | 7 ms
7,936 KB |
testcase_56 | AC | 7 ms
7,680 KB |
testcase_57 | AC | 8 ms
9,472 KB |
testcase_58 | AC | 18 ms
20,608 KB |
testcase_59 | AC | 10 ms
11,648 KB |
testcase_60 | AC | 38 ms
37,248 KB |
testcase_61 | AC | 37 ms
37,888 KB |
testcase_62 | AC | 3 ms
5,376 KB |
testcase_63 | AC | 2 ms
5,376 KB |
testcase_64 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> char field[64][64]; int h, w; int dr[4] = {1, 0, -1, 0}; int dc[4] = {0, 1, 0, -1}; bool outOfRange(int r, int c) { if( not ( 0 <= r and r < h and 0 <= c and c < w ) ) return true; return false; } const int INF = (1 << 29); const int maxV = 64 * 64 * 2; std::vector< std::tuple<int, int> > graph[maxV]; bool finished[maxV]; int flow[maxV][maxV], capacity[maxV][maxV]; int depth[maxV]; int src, dest; int V, E; void setupDinic() { V = 64 * 64 * 2; for(int r = 0; r < h; ++r) { for(int c = 0; c < w; ++c) { if( field[r][c] == '.' ) continue; if( field[r][c] == 'b' ) { int s = 64 * 64 - 1; int t = 64 * r + c; // printf("src to b(%d, %d)\n", r, c); graph[s].push_back(std::make_tuple(t, 1)); graph[t].push_back(std::make_tuple(s, 0)); capacity[s][t] = 1; capacity[t][s] = 0; for(int k = 0; k < 4; ++k) { int nr = r + dr[k], nc = c + dc[k]; if( outOfRange(nr, nc) ) continue; if( field[nr][nc] == '.' ) continue; int s2 = t; int t2 = 64 * 64 + 64 * nr + nc; // printf("b(%d, %d) to w(%d, %d)\n", r, c, nr, nc); graph[s2].push_back(std::make_tuple(t2, 1)); graph[t2].push_back(std::make_tuple(s2, 0)); capacity[s2][t2] = 1; capacity[t2][s2] = 0; } } if( field[r][c] == 'w' ) { int s = 64 * 64 + 64 * r + c; int t = 2 * 64 * 64 - 1; // printf("w(%d, %d) to dest\n", r, c); graph[s].push_back(std::make_tuple(t, 1)); graph[t].push_back(std::make_tuple(s, 0)); capacity[s][t] = 1; capacity[t][s] = 0; } } } // scanf("%d %d", &V, &E); // for(int i = 0; i < E; ++i) { // int s, t, c; // scanf("%d %d %d", &s, &t, &c); // graph[s].push_back(std::make_tuple(t, c)); // graph[t].push_back(std::make_tuple(s, 0)); // capacity[s][t] = c; // capacity[t][s] = 0; // } src = 64 * 64 - 1; dest = 2 * 64 * 64 - 1; } // update depth (foreach, update depth[next]) void bfs() { for(int i = 0; i < V; ++i) { depth[i] = INF; } depth[src] = 0; int limitdepth = INF; std::queue<int> q; q.push(src); while( not q.empty() ) { int id = q.front(); q.pop(); if( id == dest ) limitdepth = depth[id]; if( depth[id] > limitdepth ) break; for(std::tuple<int, int> I : graph[id]) { int next, limit; std::tie(next, limit) = I; if( limit - flow[id][next] <= 0 ) continue; if( depth[next] != INF ) continue; depth[next] = depth[id] + 1; q.push(next); } } // printf("update depth\n"); for(int i = 0; i < V; ++i) { // printf("depth[%d] : %d\n", i, depth[i]); } } // try flow once // return := one flow int prev_count[maxV]; void initdfs() { for(int i = 0; i < V; ++i) { prev_count[i] = 0; } } int dfs(int id, int fm) { if( id == dest ) return fm; if( fm == 0 ) return 0; if( finished[id] ) return 0; // for(std::tuple<int, int> I : graph[id]) { for(int i = prev_count[id]; i < (int)graph[id].size(); ++i) { prev_count[id] = std::max(prev_count[id], i-1); std::tuple<int, int> I = graph[id][i]; int next, limit; std::tie(next, limit) = I; if( not ( depth[id] < depth[next] ) ) continue; int ft = dfs(next, std::min(fm, limit - flow[id][next])); if( ft <= 0 ) continue; flow[id][next] += ft; flow[next][id] -= ft; return ft; } finished[id] = true; return 0; } int Dinic() { int total = 0; for(;;) { bfs(); for(int i = 0; i < V; ++i) finished[i] = false; int f = 0; initdfs(); for(;;) { int ft = dfs(src, INF); if( ft == 0 ) break; f += ft; } if( f == 0 ) break; total += f; } return total; } int main() { scanf("%d %d", &h, &w); for(int i = 0; i < h; ++i) { scanf("%s", field[i]); } setupDinic(); int num_pair = Dinic(); // printf(" %d\n", num_pair); int ww = 0, bb = 0; for(int r = 0; r < h; ++r) { for(int c = 0; c < w; ++c) { if( field[r][c] == 'w' ) ww += 1; if( field[r][c] == 'b' ) bb += 1; } } ww -= num_pair; bb -= num_pair; printf("%d\n", 100 * num_pair + 10 * std::min(ww, bb) + std::abs(ww - bb)); return 0; }