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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#46038 | #602. 最小费用最大流(随机数据) | leukocyte# | 30 | 421ms | 4336kb | C++17 | 1.6kb | 2022-08-24 22:10:37 | 2022-08-24 22:10:39 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
const int N=4e2,M=1.5e4;
int n,m;
struct MCMF{
int n,S,T;
int h[N+5],ek;
struct E{
int v,w,c,nxt;
E(int v=0,int w=0,int c=0,int nxt=0):v(v),w(w),c(c),nxt(nxt){}
}e[M*2+5];
int pre[N+5];
ll fl[N+5],dis[N+5],hv[N+5];
struct Que{
int u,d;
Que(int u=0,int d=0):u(u),d(d){}
bool operator < (const Que t) const{ return d>t.d; }
};
void prep(int _n,int s,int t){
ek=1; n=_n; S=s; T=t;
}
void adde(int u,int v,int w,int c){
e[++ek]=E(v,w,c,h[u]); h[u]=ek;
e[++ek]=E(u,0,-c,h[v]); h[v]=ek;
}
bool dij(){
priority_queue<Que> q;
for(int i=1;i<=n;i++){
dis[i]=1ll<<60; fl[i]=0;
}
dis[S]=0; fl[S]=1ll<<60;
q.emplace(S,0);
while(!q.empty()){
Que t=q.top(); q.pop();
int u=t.u;
if(u==T) return fl[T]>0;
if(dis[u]!=t.d) continue;
ll d=t.d+hv[u];
for(int i=h[u];i;i=e[i].nxt){
int v=e[i].v;
if(e[i].w&&dis[v]>d+e[i].c-hv[v]){
dis[v]=d+e[i].c-hv[v];
fl[v]=min(fl[u],(ll)e[i].w);
pre[v]=i;
q.emplace(v,dis[v]);
}
}
}
return 0;
}
pair<ll,ll> mcmf(){
pair<ll,ll> ans=make_pair(0,0);
while(dij()){
ans.first+=fl[T];
ans.second+=dis[T]+hv[T];
int now=T;
while(now!=S){
int ei=pre[now];
e[ei].w-=fl[T]; e[ei^1].w+=fl[T];
now=e[ei^1].v;
}
for(int i=1;i<=n;i++) hv[i]+=dis[i];
}
return ans;
}
}f;
int main(){
scanf("%d %d",&n,&m);
f.prep(n,1,n);
for(int i=1,u,v,w,c;i<=m;i++){
scanf("%d %d %d %d",&u,&v,&w,&c);
f.adde(u,v,w,c);
}
pair<ll,ll> ans=f.mcmf();
printf("%lld %lld\n",ans.first,ans.second);
return 0;
}
详细
Test #1:
score: 10
Accepted
time: 2ms
memory: 4304kb
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: 0
Wrong Answer
time: 2ms
memory: 4336kb
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:
13 285
result:
wrong answer 1st numbers differ - expected: '15', found: '13'
Test #3:
score: 0
Time Limit Exceeded
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:
result:
Test #4:
score: 10
Accepted
time: 21ms
memory: 4312kb
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: 78ms
memory: 4244kb
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: 0
Time Limit Exceeded
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:
result:
Test #7:
score: 0
Wrong Answer
time: 71ms
memory: 4328kb
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:
1971 140527
result:
wrong answer 1st numbers differ - expected: '2000', found: '1971'
Test #8:
score: 0
Wrong Answer
time: 421ms
memory: 4192kb
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:
3723 454994
result:
wrong answer 1st numbers differ - expected: '5000', found: '3723'
Test #9:
score: 0
Time Limit Exceeded
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:
result:
Test #10:
score: 0
Time Limit Exceeded
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...