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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#601731#602. 最小费用最大流(随机数据)1372037149100 ✓360ms4268kbC++202.6kb2024-09-30 11:41:302024-09-30 11:41:30

Judging History

你现在查看的是最新测评结果

  • [2024-09-30 11:41:30]
  • 评测
  • 测评结果:100
  • 用时:360ms
  • 内存:4268kb
  • [2024-09-30 11:41:30]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> du;
#define INF 1e18
#define mod 998244353
#define base 13331
const int N = 405;
const int MAXN=405;
const int siz=270;
const int maxnode = 1e6+5;
const int up = 30;

struct MCMF {
    struct edge {
        int v, id, revid;
        long long f, c;
        edge (int _v, long long _f, long long _c, int _id, int _revid) : v(_v), f(_f), c(_c), id(_id), revid(_revid) {}
    };
    vector <vector <edge> > adj;
    vector <pair <int, int> > rt;
    vector <long long> dis;
    int n, s, t;
    MCMF (int _n, int _s, int _t) : n(_n), s(_s), t(_t) {
        adj.resize(n);
    }
    void add_edge(int u, int v, long long f, long long c) {// f:capicty, c:weight
        adj[u].push_back(edge(v, f, c, adj[u].size(), adj[v].size()));
        adj[v].push_back(edge(u, 0, -c, adj[v].size(), adj[u].size() - 1));
    }
    bool SPFA() {
        rt.assign(n, make_pair(-1, -1));
        dis.assign(n, INF);
        vector <bool> vis(n, false);
        queue <int> q;
        q.push(s);
        dis[s] = 0;
        vis[s] = true;
        while (q.size()) {
            int v = q.front(); q.pop();
            vis[v] = false;
            for (edge &e : adj[v]) if (e.f > 0 && dis[e.v] > dis[v] + e.c) {
                dis[e.v] = dis[v] + e.c;
                rt[e.v] = make_pair(v, e.id);
                if (!vis[e.v]) {
                    vis[e.v] = true;
                    q.push(e.v);
                }
            }
        }
        return dis[t] != INF;
    }
    du runFlow() { // cost, flow
        long long cost = 0, flow = 0;
        vector <long long> ans;
        while (SPFA()) {
            vector <pair <int, int> > E;
            int v = t;
            long long addflow = INF;
            while (v != s) {
                E.push_back(rt[v]);
                addflow = min(addflow, adj[rt[v].first][rt[v].second].f);
                v = rt[v].first;
            }
            for (pair <int, int> a : E) {
                adj[a.first][a.second].f -= addflow;
                adj[adj[a.first][a.second].v][adj[a.first][a.second].revid].f += addflow;
            }
            flow += addflow;
            cost += addflow * dis[t];
        }
        return {cost,flow};
    }
};
ll n,m,s,t,c,w;
void solve(){
  cin>>n>>m;
  MCMF f(n+5,1,n);
  for(ll i=1;i<=m;i++){
    cin>>s>>t>>c>>w;
    f.add_edge(s,t,c,w);
  }
  auto k=f.runFlow();
  cout<<k.second<<" "<<k.first<<endl;
  return ;
}
// (2,5,7)+(3,4,6,7)
int main(){
    ios::sync_with_stdio(0);
    ll t=1;
    //cin>>t;
    while(t--)
        solve();
    return 0;
}

Details

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Pretests


Final Tests

Test #1:

score: 10
Accepted
time: 1ms
memory: 3484kb

input:

8 27
2 3 2147483647 100
1 3 1 100
2 4 2147483647 10
1 4 1 10
2 4 2147483647 10
1 4 1 10
2 8 3 0
3 5 2147483647 100
1 5 1 100
3 8 1 0
3 2 2147483647 0
4 5 2147483647 10
1 5 1 10
4 8 1 0
4 2 2147483647 0
5 6 2147483647 1
1 6 1 1
5 6 2147483647 1
1 6 1 1
5 7 2147483647 1
1 7 1 1
5 8 3 0
5 2 2147483647 ...

output:

8 243

result:

ok 2 number(s): "8 243"

Test #2:

score: 10
Accepted
time: 1ms
memory: 3752kb

input:

12 49
2 10 2147483647 5
1 10 1 5
2 5 2147483647 50
1 5 1 50
2 9 2147483647 8
1 9 1 8
2 8 2147483647 47
1 8 1 47
2 11 2147483647 17
1 11 1 17
2 12 5 0
3 12 0 0
3 2 2147483647 0
4 6 2147483647 18
1 6 1 18
4 11 2147483647 12
1 11 1 12
4 9 2147483647 14
1 9 1 14
4 12 3 0
4 2 2147483647 0
5 11 2147483647...

output:

15 436

result:

ok 2 number(s): "15 436"

Test #3:

score: 10
Accepted
time: 0ms
memory: 3640kb

input:

27 169
2 15 2147483647 24
1 15 1 24
2 19 2147483647 96
1 19 1 96
2 12 2147483647 49
1 12 1 49
2 13 2147483647 75
1 13 1 75
2 24 2147483647 2
1 24 1 2
2 27 5 0
3 27 0 0
3 2 2147483647 0
4 11 2147483647 99
1 11 1 99
4 3 2147483647 85
1 3 1 85
4 27 2 0
4 2 2147483647 0
5 27 0 0
5 2 2147483647 0
6 9 214...

output:

60 4338

result:

ok 2 number(s): "60 4338"

Test #4:

score: 10
Accepted
time: 9ms
memory: 4028kb

input:

77 2149
2 42 2147483647 33
1 42 1 33
2 68 2147483647 30
1 68 1 30
2 76 2147483647 13
1 76 1 13
2 51 2147483647 93
1 51 1 93
2 12 2147483647 39
1 12 1 39
2 57 2147483647 74
1 57 1 74
2 70 2147483647 21
1 70 1 21
2 73 2147483647 24
1 73 1 24
2 52 2147483647 54
1 52 1 54
2 15 2147483647 99
1 15 1 99
2 ...

output:

1000 74606

result:

ok 2 number(s): "1000 74606"

Test #5:

score: 10
Accepted
time: 29ms
memory: 3760kb

input:

102 4199
2 48 2147483647 42
1 48 1 42
2 85 2147483647 50
1 85 1 50
2 22 2147483647 83
1 22 1 83
2 95 2147483647 97
1 95 1 97
2 82 2147483647 34
1 82 1 34
2 25 2147483647 72
1 25 1 72
2 4 2147483647 17
1 4 1 17
2 47 2147483647 10
1 47 1 10
2 71 2147483647 12
1 71 1 12
2 68 2147483647 39
1 68 1 39
2 2...

output:

2000 161420

result:

ok 2 number(s): "2000 161420"

Test #6:

score: 10
Accepted
time: 33ms
memory: 3844kb

input:

102 4199
2 79 2147483647 13
1 79 1 13
2 83 2147483647 73
1 83 1 73
2 75 2147483647 90
1 75 1 90
2 30 2147483647 92
1 30 1 92
2 54 2147483647 25
1 54 1 25
2 66 2147483647 53
1 66 1 53
2 52 2147483647 37
1 52 1 37
2 63 2147483647 46
1 63 1 46
2 11 2147483647 20
1 11 1 20
2 55 2147483647 53
1 55 1 53
2...

output:

2000 143072

result:

ok 2 number(s): "2000 143072"

Test #7:

score: 10
Accepted
time: 32ms
memory: 3836kb

input:

102 4199
2 39 2147483647 45
1 39 1 45
2 51 2147483647 11
1 51 1 11
2 86 2147483647 63
1 86 1 63
2 23 2147483647 46
1 23 1 46
2 48 2147483647 63
1 48 1 63
2 87 2147483647 8
1 87 1 8
2 73 2147483647 63
1 73 1 63
2 5 2147483647 52
1 5 1 52
2 80 2147483647 21
1 80 1 21
2 31 2147483647 44
1 31 1 44
2 101...

output:

2000 146132

result:

ok 2 number(s): "2000 146132"

Test #8:

score: 10
Accepted
time: 309ms
memory: 4244kb

input:

302 10599
2 72 2147483647 169
1 72 1 169
2 260 2147483647 165
1 260 1 165
2 12 2147483647 108
1 12 1 108
2 16 2147483647 26
1 16 1 26
2 28 2147483647 148
1 28 1 148
2 7 2147483647 74
1 7 1 74
2 139 2147483647 199
1 139 1 199
2 231 2147483647 9
1 231 1 9
2 287 2147483647 123
1 287 1 123
2 135 2147483...

output:

5000 1106316

result:

ok 2 number(s): "5000 1106316"

Test #9:

score: 10
Accepted
time: 360ms
memory: 4268kb

input:

302 10599
2 222 2147483647 132
1 222 1 132
2 17 2147483647 7
1 17 1 7
2 177 2147483647 253
1 177 1 253
2 90 2147483647 195
1 90 1 195
2 128 2147483647 289
1 128 1 289
2 42 2147483647 193
1 42 1 193
2 213 2147483647 133
1 213 1 133
2 263 2147483647 293
1 263 1 293
2 50 2147483647 155
1 50 1 155
2 228...

output:

5000 1290871

result:

ok 2 number(s): "5000 1290871"

Test #10:

score: 10
Accepted
time: 320ms
memory: 4220kb

input:

302 10599
2 176 2147483647 289
1 176 1 289
2 190 2147483647 99
1 190 1 99
2 10 2147483647 96
1 10 1 96
2 240 2147483647 165
1 240 1 165
2 273 2147483647 205
1 273 1 205
2 248 2147483647 194
1 248 1 194
2 220 2147483647 122
1 220 1 122
2 194 2147483647 167
1 194 1 167
2 8 2147483647 67
1 8 1 67
2 227...

output:

5000 1395897

result:

ok 2 number(s): "5000 1395897"