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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#44625 | #602. 最小费用最大流(随机数据) | CCPSDCGK# | 100 ✓ | 852ms | 3984kb | C++23 | 2.8kb | 2022-08-20 14:23:48 | 2022-08-20 14:23:50 |
Judging History
answer
#include<map>
#include<set>
#include<queue>
#include<deque>
#include<cmath>
#include<ctime>
#include<bitset>
#include<vector>
#include<cstdio>
#include<string>
#include<random>
#include<cassert>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<unordered_map>
using namespace std;
using ll=long long;
using uint=unsigned int;
using ull=unsigned long long;
#define endl '\n'
#define lb lower_bound
#define ub upper_bound
#define eb emplace_back
#define fs fflush(stdout)
#define ump unordered_map
#define pq priority_queue
#define clz __builtin_clz
#define ctz __builtin_ctz
#define sz(x) (int)x.size()
#define np next_permutation
#define clzl __builtin_clzll
#define ctzl __builtin_ctzll
#define ppc __builtin_popcount
#define all(x) x.begin(),x.end()
#define ppcl __builtin_popcountll
#define fpi(x) freopen(x,"r",stdin)
#define fpo(x) freopen(x,"w",stdout)
#define uid uniform_int_distribution
#define urd uniform_real_distribution
#define me(x,y) memset(x,y,sizeof(x))
#define dbg(x) cerr<<"In Line "<<__LINE__<<' '<<#x<<'='<<(x)<<'\n'
#define gc p1==p2&&(p2=(p1=buf)+fread(buf,1,iosiz,stdin),p1==p2)?EOF:*p1++
#define iosiz 1024
char buf[iosiz],*p1=buf,*p2=buf;
template<class T> inline T &re(T &x){
x=0;int f=1;char ch=gc;
while(ch<48||ch>57){
if(ch==45) f=-f;ch=gc;
}
while(ch>47&&ch<58) x=(x<<1)+(x<<3)+(ch^48),ch=gc;
return x*=f;
}
#define mod 998244353
#define inf 0x3f3f3f3f
struct node{
int to,flow,cost,nxt;
}edge[30005];
int tot=-1,n,head[405],dis[405],ans2;
bool vis[405];
inline void add(int u,int v,int w,int c){
edge[++tot]={v,w,c,head[u]},head[u]=tot;
edge[++tot]={u,0,-c,head[v]},head[v]=tot;
}
bool spfa(){
queue<int> q;me(dis,0x3f),dis[1]=0,q.emplace(1),vis[1]=1;
while(!q.empty()){
int f=q.front();q.pop(),vis[f]=0;
for(int i=head[f];~i;i=edge[i].nxt) if(edge[i].flow&&dis[edge[i].to]>dis[f]+edge[i].cost){
dis[edge[i].to]=dis[f]+edge[i].cost;if(!vis[edge[i].to]) vis[edge[i].to]=1,q.emplace(edge[i].to);
}
}
return dis[n]^inf;
}
int dfs(int u,int flow){
if(u==n) return ans2+=dis[n]*flow,flow;
int res=0;vis[u]=1;
for(int i=head[u];~i;i=edge[i].nxt) if(dis[edge[i].to]==dis[u]+edge[i].cost&&edge[i].flow&&!vis[edge[i].to]){
int ret=dfs(edge[i].to,min(flow,edge[i].flow));
if(!ret){
dis[edge[i].to]=inf;continue;
}
res+=ret,flow-=ret,edge[i].flow-=ret,edge[i^1].flow+=ret;
if(!flow) return vis[u]=0,res;
}return vis[u]=0,res;
}
int main(){
#ifdef CCPSDCGK
fpi("shuju.txt");
#endif
me(head,-1);
re(n);int m=re(m),ans1=0;
while(m--){
int u=re(u),v=re(v),w=re(w),c=re(c);
add(u,v,w,c);
}
while(spfa()) ans1+=dfs(1,2147483647);cout<<ans1<<' '<<ans2;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 10
Accepted
time: 3ms
memory: 3648kb
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: 2ms
memory: 3580kb
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: 3ms
memory: 3524kb
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: 27ms
memory: 3724kb
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: 99ms
memory: 3636kb
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: 101ms
memory: 3788kb
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: 97ms
memory: 3780kb
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: 723ms
memory: 3848kb
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: 852ms
memory: 3984kb
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: 815ms
memory: 3912kb
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"