結果
問題 | No.421 しろくろチョコレート |
ユーザー | umimel |
提出日時 | 2022-12-30 15:50:10 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 7 ms / 2,000 ms |
コード長 | 3,698 bytes |
コンパイル時間 | 2,802 ms |
コンパイル使用メモリ | 193,272 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-11-25 12:20:11 |
合計ジャッジ時間 | 4,683 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
5,248 KB |
testcase_01 | AC | 4 ms
5,248 KB |
testcase_02 | AC | 3 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 3 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 3 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 3 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 3 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 2 ms
5,248 KB |
testcase_16 | AC | 4 ms
5,248 KB |
testcase_17 | AC | 5 ms
5,248 KB |
testcase_18 | AC | 5 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 4 ms
5,248 KB |
testcase_21 | AC | 5 ms
5,248 KB |
testcase_22 | AC | 3 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 2 ms
5,248 KB |
testcase_25 | AC | 2 ms
5,248 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 2 ms
5,248 KB |
testcase_28 | AC | 3 ms
5,248 KB |
testcase_29 | AC | 3 ms
5,248 KB |
testcase_30 | AC | 3 ms
5,248 KB |
testcase_31 | AC | 6 ms
5,248 KB |
testcase_32 | AC | 3 ms
5,248 KB |
testcase_33 | AC | 4 ms
5,248 KB |
testcase_34 | AC | 2 ms
5,248 KB |
testcase_35 | AC | 2 ms
5,248 KB |
testcase_36 | AC | 3 ms
5,248 KB |
testcase_37 | AC | 5 ms
5,248 KB |
testcase_38 | AC | 6 ms
5,248 KB |
testcase_39 | AC | 3 ms
5,248 KB |
testcase_40 | AC | 4 ms
5,248 KB |
testcase_41 | AC | 3 ms
5,248 KB |
testcase_42 | AC | 3 ms
5,248 KB |
testcase_43 | AC | 3 ms
5,248 KB |
testcase_44 | AC | 5 ms
5,248 KB |
testcase_45 | AC | 2 ms
5,248 KB |
testcase_46 | AC | 2 ms
5,248 KB |
testcase_47 | AC | 3 ms
5,248 KB |
testcase_48 | AC | 6 ms
5,248 KB |
testcase_49 | AC | 3 ms
5,248 KB |
testcase_50 | AC | 3 ms
5,248 KB |
testcase_51 | AC | 5 ms
5,248 KB |
testcase_52 | AC | 3 ms
5,248 KB |
testcase_53 | AC | 2 ms
5,248 KB |
testcase_54 | AC | 3 ms
5,248 KB |
testcase_55 | AC | 3 ms
5,248 KB |
testcase_56 | AC | 2 ms
5,248 KB |
testcase_57 | AC | 2 ms
5,248 KB |
testcase_58 | AC | 4 ms
5,248 KB |
testcase_59 | AC | 2 ms
5,248 KB |
testcase_60 | AC | 7 ms
5,248 KB |
testcase_61 | AC | 7 ms
5,248 KB |
testcase_62 | AC | 2 ms
5,248 KB |
testcase_63 | AC | 2 ms
5,248 KB |
testcase_64 | AC | 2 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using pll = pair<ll, ll>; #define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i) #define rep(i, n) drep(i, 0, n - 1) #define all(a) (a).begin(), (a).end() #define pb push_back #define fi first #define se second const ll MOD = 1000000007; const ll MOD2 = 998244353; const ll INF = 1LL << 60; const ll MAX_N = 2e5; struct Dinic{ struct Edge{ ll to; ll cap; ll rev; }; vector<vector<Edge>> G; vector<ll> level; vector<ll> iter; ll N; Dinic(vector<vector<pll>> &G_){ N = (ll)G_.size(); G.resize(N); level.resize(N); iter.resize(N); rep(from, N){ for(pll p : G_[from]){ ll to = p.fi; ll cap = p.se; G[from].pb((Edge){to, cap, (ll)G[to].size()}); G[to].pb((Edge){from, 0, (ll)G[from].size()-1}); } } } void bfs(ll s, vector<vector<Edge>> &H){ rep(i, N) level[i]=-1; queue<ll> Q; level[s] = 0; Q.push(s); while(!Q.empty()){ ll v = Q.front(); Q.pop(); for(ll i=0; i<(ll)H[v].size(); i++){ Edge &e = H[v][i]; if(e.cap > 0 && level[e.to] < 0){ level[e.to] = level[v] + 1; Q.push(e.to); } } } } ll dfs(ll v, ll t, ll f, vector<vector<Edge>> &H){ if(v == t) return f; for(ll &i=iter[v]; i<(ll)H[v].size(); i++){ Edge &e = H[v][i]; if(e.cap > 0 && level[v] < level[e.to]){ ll d = dfs(e.to, t, min(f, e.cap), H); if(d > 0){ e.cap -= d; H[e.to][e.rev].cap += d; return d; } } } return 0; } ll max_flow(ll s, ll t){ vector<vector<Edge>> H(N); rep(from, N) for(Edge e : G[from]) H[from].pb(e); ll flow = 0; for(;;){ bfs(s, H); if(level[t] < 0) return flow; rep(i, N) iter[i] = 0; ll f; while((f = dfs(s, t, INF, H)) > 0){ flow += f; } } } }; int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); ll h, w; cin >> h >> w; vector<vector<char>> a(h, vector<char>(w)); rep(i, h) rep(j, w) cin >> a[i][j]; ll n = 0, wn = 0, bn = 0; vector<vector<ll>> alloc(h, vector<ll>(w, -1)); rep(i, h) rep(j, w) if((i+j)%2 == 0 && a[i][j] != '.') alloc[i][j]=n++; wn = n; rep(i, h) rep(j, w) if((i+j)%2 == 1 && a[i][j] != '.') alloc[i][j]=n++; bn = n - wn; vector<vector<pll>> G(n+2); ll s = n; ll t = n+1; rep(i, h) rep(j, w){ if((i+j)%2 == 0 && alloc[i][j] != -1){ G[s].pb({alloc[i][j], 1}); } } ll di[4] = {0, 0, 1, -1}; ll dj[4] = {1, -1, 0, 0}; rep(i, h) rep(j, w){ if((i+j)%2 == 1) continue; if(alloc[i][j] == -1) continue; rep(k, 4){ ll next_i = i + di[k]; ll next_j = j + dj[k]; if(next_i < 0 || next_j < 0 || h <= next_i || w <= next_j) continue; if(alloc[next_i][next_j]==-1) continue; G[alloc[i][j]].pb({alloc[next_i][next_j], 1}); } } rep(i, h) rep(j, w){ if((i+j)%2 == 1 && alloc[i][j] != -1){ G[alloc[i][j]].pb({t, 1}); } } Dinic dinic(G); ll x, y, z; z = dinic.max_flow(s, t); y = min(wn-z, bn-z); x = n - 2*z - 2*y; cout << x + 10*y + 100*z << endl; }