結果
問題 | No.957 植林 |
ユーザー | ei1333333 |
提出日時 | 2019-12-03 02:53:55 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,294 ms / 2,000 ms |
コード長 | 3,336 bytes |
コンパイル時間 | 2,080 ms |
コンパイル使用メモリ | 218,460 KB |
実行使用メモリ | 11,008 KB |
最終ジャッジ日時 | 2024-07-07 01:39:56 |
合計ジャッジ時間 | 29,736 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 97 ms
9,856 KB |
testcase_04 | AC | 123 ms
9,216 KB |
testcase_05 | AC | 58 ms
9,984 KB |
testcase_06 | AC | 131 ms
10,240 KB |
testcase_07 | AC | 89 ms
9,728 KB |
testcase_08 | AC | 31 ms
10,240 KB |
testcase_09 | AC | 30 ms
9,728 KB |
testcase_10 | AC | 34 ms
10,240 KB |
testcase_11 | AC | 33 ms
10,112 KB |
testcase_12 | AC | 35 ms
9,600 KB |
testcase_13 | AC | 27 ms
8,192 KB |
testcase_14 | AC | 32 ms
10,496 KB |
testcase_15 | AC | 28 ms
10,112 KB |
testcase_16 | AC | 25 ms
8,064 KB |
testcase_17 | AC | 27 ms
9,600 KB |
testcase_18 | AC | 828 ms
9,856 KB |
testcase_19 | AC | 868 ms
9,984 KB |
testcase_20 | AC | 937 ms
10,368 KB |
testcase_21 | AC | 974 ms
10,240 KB |
testcase_22 | AC | 1,066 ms
10,368 KB |
testcase_23 | AC | 1,142 ms
10,752 KB |
testcase_24 | AC | 1,208 ms
10,752 KB |
testcase_25 | AC | 1,253 ms
11,008 KB |
testcase_26 | AC | 1,294 ms
11,008 KB |
testcase_27 | AC | 1,257 ms
10,880 KB |
testcase_28 | AC | 1,277 ms
11,008 KB |
testcase_29 | AC | 1,258 ms
10,880 KB |
testcase_30 | AC | 1,250 ms
10,880 KB |
testcase_31 | AC | 810 ms
9,728 KB |
testcase_32 | AC | 884 ms
9,984 KB |
testcase_33 | AC | 935 ms
10,240 KB |
testcase_34 | AC | 979 ms
10,240 KB |
testcase_35 | AC | 1,072 ms
10,368 KB |
testcase_36 | AC | 1,132 ms
10,752 KB |
testcase_37 | AC | 1,189 ms
10,752 KB |
testcase_38 | AC | 1,241 ms
10,880 KB |
testcase_39 | AC | 1,251 ms
11,008 KB |
testcase_40 | AC | 1,266 ms
10,880 KB |
testcase_41 | AC | 18 ms
10,880 KB |
testcase_42 | AC | 19 ms
10,880 KB |
testcase_43 | AC | 47 ms
10,880 KB |
testcase_44 | AC | 49 ms
11,008 KB |
testcase_45 | AC | 2 ms
6,940 KB |
testcase_46 | AC | 1 ms
6,940 KB |
testcase_47 | AC | 2 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using int64 = long long; template< typename flow_t > struct DinicCapacityScaling { const flow_t INF; struct edge { int to; flow_t cap; int rev; bool isrev; }; vector< vector< edge > > graph; vector< int > min_cost, iter; flow_t max_cap; DinicCapacityScaling(int V) : INF(numeric_limits< flow_t >::max()), graph(V), max_cap(0) {} void add_edge(int from, int to, flow_t cap) { max_cap = max(max_cap, cap); graph[from].emplace_back((edge) {to, cap, (int) graph[to].size(), false}); graph[to].emplace_back((edge) {from, 0, (int) graph[from].size() - 1, true}); } bool bfs(int s, int t, const flow_t &base) { min_cost.assign(graph.size(), -1); queue< int > que; min_cost[s] = 0; que.push(s); while(!que.empty() && min_cost[t] == -1) { int p = que.front(); que.pop(); for(auto &e : graph[p]) { if(e.cap >= base && min_cost[e.to] == -1) { min_cost[e.to] = min_cost[p] + 1; que.push(e.to); } } } return min_cost[t] != -1; } flow_t dfs(int idx, const int t, const flow_t base, flow_t flow) { if(idx == t) return flow; flow_t sum = 0; for(int &i = iter[idx]; i < graph[idx].size(); i++) { edge &e = graph[idx][i]; if(e.cap >= base && min_cost[idx] < min_cost[e.to]) { flow_t d = dfs(e.to, t, base, min(flow - sum, e.cap)); if(d > 0) { e.cap -= d; graph[e.to][e.rev].cap += d; sum += d; if(flow - sum < base) break; } } } return sum; } flow_t max_flow(int s, int t) { if(max_cap == flow_t(0)) return flow_t(0); flow_t flow = 0; for(int i = 63 - __builtin_clzll(max_cap); i >= 0; i--) { flow_t now = flow_t(1) << i; while(bfs(s, t, now)) { iter.assign(graph.size(), 0); flow += dfs(s, t, now, INF); } } return flow; } void output() { for(int i = 0; i < graph.size(); i++) { for(auto &e : graph[i]) { if(e.isrev) continue; auto &rev_e = graph[e.to][e.rev]; cout << i << "->" << e.to << " (flow: " << rev_e.cap << "/" << e.cap + rev_e.cap << ")" << endl; } } } }; int main() { int H, W; cin >> H >> W; vector< vector< int64 > > G(H, vector< int64 >(W)); for(int i = 0; i < H; i++) { for(int j = 0; j < W; j++) cin >> G[i][j]; } vector< int64 > R(H), C(W); for(int i = 0; i < H; i++) cin >> R[i]; for(int i = 0; i < W; i++) cin >> C[i]; int64 sum = accumulate(begin(R), end(R), 0LL) + accumulate(begin(C), end(C), 0LL); vector< int64 > row_sum(H); for(int i = 0; i < H; i++) { for(int j = 0; j < W; j++) row_sum[i] += G[i][j]; } int64 sum_cut = 0; vector< int64 > row_cap(H); for(int i = 0; i < H; i++) { int64 cut = min(R[i], row_sum[i]); row_cap[i] = row_sum[i] - cut; sum_cut += cut; } DinicCapacityScaling< int64 > flow(H + W + 2); int S = H + W; int T = S + 1; for(int i = 0; i < H; i++) { for(int j = 0; j < W; j++) { flow.add_edge(i, H + j, G[i][j]); } } for(int i = 0; i < H; i++) { flow.add_edge(S, i, row_cap[i]); } for(int i = 0; i < W; i++) { flow.add_edge(H + i, T, C[i]); } cout << sum - flow.max_flow(S, T) - sum_cut << endl; }