結果
問題 | No.1324 Approximate the Matrix |
ユーザー | milanis48663220 |
提出日時 | 2020-12-21 01:11:50 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 730 ms / 2,000 ms |
コード長 | 3,955 bytes |
コンパイル時間 | 1,209 ms |
コンパイル使用メモリ | 109,912 KB |
実行使用メモリ | 11,264 KB |
最終ジャッジ日時 | 2024-09-21 12:37:44 |
合計ジャッジ時間 | 8,512 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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 351 ms
8,192 KB |
testcase_04 | AC | 357 ms
7,808 KB |
testcase_05 | AC | 367 ms
8,192 KB |
testcase_06 | AC | 406 ms
7,936 KB |
testcase_07 | AC | 358 ms
7,936 KB |
testcase_08 | AC | 12 ms
6,940 KB |
testcase_09 | AC | 13 ms
6,940 KB |
testcase_10 | AC | 28 ms
6,944 KB |
testcase_11 | AC | 70 ms
6,940 KB |
testcase_12 | AC | 15 ms
6,940 KB |
testcase_13 | AC | 6 ms
6,940 KB |
testcase_14 | AC | 79 ms
6,940 KB |
testcase_15 | AC | 19 ms
6,940 KB |
testcase_16 | AC | 4 ms
6,940 KB |
testcase_17 | AC | 56 ms
6,940 KB |
testcase_18 | AC | 10 ms
6,940 KB |
testcase_19 | AC | 20 ms
6,940 KB |
testcase_20 | AC | 5 ms
6,944 KB |
testcase_21 | AC | 5 ms
6,940 KB |
testcase_22 | AC | 5 ms
6,944 KB |
testcase_23 | AC | 66 ms
6,940 KB |
testcase_24 | AC | 123 ms
6,940 KB |
testcase_25 | AC | 67 ms
6,944 KB |
testcase_26 | AC | 50 ms
6,944 KB |
testcase_27 | AC | 27 ms
6,944 KB |
testcase_28 | AC | 2 ms
6,940 KB |
testcase_29 | AC | 2 ms
6,944 KB |
testcase_30 | AC | 2 ms
6,944 KB |
testcase_31 | AC | 2 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,944 KB |
testcase_33 | AC | 2 ms
6,944 KB |
testcase_34 | AC | 2 ms
6,940 KB |
testcase_35 | AC | 2 ms
6,940 KB |
testcase_36 | AC | 2 ms
6,944 KB |
testcase_37 | AC | 730 ms
11,136 KB |
testcase_38 | AC | 646 ms
11,136 KB |
testcase_39 | AC | 631 ms
11,264 KB |
testcase_40 | AC | 708 ms
11,136 KB |
testcase_41 | AC | 729 ms
11,136 KB |
testcase_42 | AC | 6 ms
6,944 KB |
testcase_43 | AC | 6 ms
6,944 KB |
testcase_44 | AC | 7 ms
6,940 KB |
コンパイルメッセージ
main.cpp: In member function 'void MinCostFlow::add_edge(int, int, ll, ll)': main.cpp:39:63: warning: narrowing conversion of '(&((MinCostFlow*)this)->MinCostFlow::G.std::vector<std::vector<edge> >::operator[](((std::vector<std::vector<edge> >::size_type)to)))->std::vector<edge>::size()' from 'std::vector<edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 39 | G[from].push_back((edge){to, cap, cost, G[to].size()}); | ~~~~~~~~~~^~ main.cpp:40:66: warning: narrowing conversion of '((&((MinCostFlow*)this)->MinCostFlow::G.std::vector<std::vector<edge> >::operator[](((std::vector<std::vector<edge> >::size_type)from)))->std::vector<edge>::size() - 1)' from 'std::vector<edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 40 | G[to].push_back((edge){from, 0, -cost, G[from].size()-1}); | ~~~~~~~~~~~~~~^~
ソースコード
#include <iostream> #include <algorithm> #include <iomanip> #include <vector> #include <queue> #include <set> #include <map> #include <cassert> #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } using namespace std; typedef long long ll; const ll INF = 1e18; struct edge{ int to; ll cap, cost; int rev; }; class MinCostFlow{ public: int V; // 頂点数 vector<vector<edge>> G; MinCostFlow(int v){ V = v; G = vector<vector<edge>>(v, vector<edge>()); dist = vector<ll>(v); preve = vector<int>(v); prevv = vector<int>(v); } void add_edge(int from, int to, ll cap, ll cost){ G[from].push_back((edge){to, cap, cost, G[to].size()}); G[to].push_back((edge){from, 0, -cost, G[from].size()-1}); } ll min_cost_flow(int s, int t, int f){ ll res = 0; while(f > 0){ fill(dist.begin(), dist.end(), INF); dist[s] = 0; bool update = true; while(update){ update = false; for(int v = 0; v < V; v++){ if(dist[v] == INF) continue; for(int i = 0; i < G[v].size(); i++){ edge &e = G[v][i]; if(e.cap > 0 && dist[e.to] > dist[v]+e.cost){ dist[e.to] = dist[v]+e.cost; prevv[e.to] = v; preve[e.to] = i; update = true; } } } } if(dist[t] == INF){ return -1; } ll d = f; for(int v = t; v != s; v = prevv[v]){ d = min(d, G[prevv[v]][preve[v]].cap); } f -= d; res += d*dist[t]; for(int v = t; v != s; v = prevv[v]){ edge &e = G[prevv[v]][preve[v]]; e.cap -= d; G[v][e.rev].cap += d; } } return res; } private: vector<ll> dist; vector<int> prevv, preve; }; int n, k; int row_idx(int i){ return 1+i; } int col_idx(int i){ return 1+n+n*n+i; } int elm_idx(int i, int j){ return 1+n+n*i+j; } int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; cin >> n >> k; vector<int> a(n), b(n); vector<vector<int>> p(n, vector<int>(n)); for(int i = 0; i < n; i++) cin >> a[i]; for(int i = 0; i < n; i++) cin >> b[i]; for(int i = 0; i < n; i++){ for(int j = 0; j < n; j++){ cin >> p[i][j]; } } int m = 2+2*n+n*n; int s = 0, t = m-1; MinCostFlow mcf(m); for(int i = 0; i < n; i++){ mcf.add_edge(s, row_idx(i), a[i], 0); } for(int i = 0; i < n; i++){ mcf.add_edge(col_idx(i), t, b[i], 0); } for(int i = 0; i < n; i++){ for(int j = 0; j < n; j++){ int k_min = min(a[i], b[j]); for(int k = 1; k <= k_min; k++){ mcf.add_edge(row_idx(i), elm_idx(i, j), 1, 2*(k-p[i][j])-1); mcf.add_edge(elm_idx(i, j), col_idx(j), 1, 0); } } } int ans = 0; for(int i = 0; i < n; i++){ for(int j = 0; j < n; j++){ ans += p[i][j]*p[i][j]; } } cout << ans+mcf.min_cost_flow(s, t, k) << endl; }