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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#473206#602. 最小费用最大流(随机数据)Williamxzh#100 ✓734ms7996kbC++231.5kb2024-07-11 23:05:262024-07-11 23:05:26

Judging History

你现在查看的是最新测评结果

  • [2024-07-11 23:05:26]
  • 评测
  • 测评结果:100
  • 用时:734ms
  • 内存:7996kb
  • [2024-07-11 23:05:26]
  • 提交

answer

#include <bits/stdc++.h>
#define il inline
using namespace std;
typedef long long ll;
const ll inf=1e18;
const int N=1e5+5;
int n,m,s,t,head[N],cur[N],tot=1,vis[N];ll dis[N],sum,ans;
struct node{
    int to,nxt;ll v,w;
    il node(){to=nxt=0,v=w=0ll;}
}e[N];
il void add(int x,int y,int z,int w){e[++tot].to=y,e[tot].nxt=head[x],e[tot].v=1ll*z,e[tot].w=1ll*w,head[x]=tot;}
il void adde(int x,int y,int z,int w){add(x,y,z,w),add(y,x,0,-w);}
int q[N],hh,tt;
il int bfs(){
    int x,y;ll z,d;for(int i=1;i<=n;++i) cur[i]=head[i],dis[i]=inf,vis[i]=0;
    dis[s]=0ll,hh=1,tt=0,q[++tt]=s;
    while(hh<=tt){
        x=q[hh++],vis[x]=0;
        for(int i=head[x];i;i=e[i].nxt){
            y=e[i].to;
            if(e[i].v>0 && dis[y]>dis[x]+1ll*e[i].w){
                dis[y]=dis[x]+1ll*e[i].w;
                if(!vis[y]) vis[y]=1,q[++tt]=y;
            }
        }
    }return dis[t]<inf;
}
ll dfs(int x,ll sum){
    if(x==t) return sum;
    int y;ll z,ret=0;vis[x]=1;
    for(int i=cur[x];i && sum>0;i=e[i].nxt){
        y=e[i].to,cur[x]=i;
        if(!vis[y] && e[i].v>0 && dis[y]==dis[x]+e[i].w){
            z=dfs(y,min(e[i].v,sum));if(!z) dis[y]=inf;
            e[i].v-=z,e[i^1].v+=z,sum-=z,ret+=z,ans+=z*e[i].w;
        }
    }vis[x]=0;return ret;
}
int x,y,z,w;
int main(){
    //freopen("mincflow.in","r",stdin);
    scanf("%d%d",&n,&m);s=1,t=n;
    for(int i=1;i<=m;++i) scanf("%d%d%d%d",&x,&y,&z,&w),adde(x,y,z,w);
    while(bfs()) sum+=dfs(s,inf);
    printf("%lld %lld",sum,ans);
    return 0;
}

Details

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Test #1:

score: 10
Accepted
time: 1ms
memory: 6388kb

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: 7332kb

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: 1ms
memory: 6860kb

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: 20ms
memory: 6320kb

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: 85ms
memory: 6592kb

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: 82ms
memory: 7952kb

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: 81ms
memory: 7008kb

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: 612ms
memory: 7996kb

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: 734ms
memory: 6324kb

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: 688ms
memory: 6284kb

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"