#include<bits/stdc++.h>
#pragma GCC optimize ("Ofast")
using namespace std;
#define all(v) v.begin(), v.end()
#define pii pair<int, int>
#define pil pair<int, ll>
#define pll pair<ll, ll>
#define F first
#define S second
typedef long long ll;
const int N=105, K=1e3+5;
int n, m, k, b[N][K], s[N][K], dis[N][N], a[N][N];
bool c[N][N];
ll d[N][N];
bool ok(ll x){
for(int i=0;i<n;++i){
for(int j=0;j<n;++j)
d[i][j]=-x*dis[i][j]+a[i][j];
}
for(int o=0;o<n;++o){
for(int i=0;i<n;++i){
for(int j=0;j<n;++j){
if(c[i][o] && c[o][j])
d[i][j]=max(d[i][j], d[i][o]+d[o][j]);
}
}
for(int i=0;i<n;++i){
if(d[i][i]>0)
return 1;
}
}
for(int i=0;i<n;++i){
for(int j=i+1;j<n;++j){
if(c[i][j] && c[j][i] && d[i][j]+d[j][i]>=0)
return 1;
}
}
return 0;
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
cin>>n>>m>>k;
for(int i=0;i<n;++i){
for(int j=0;j<k;++j)
cin>>b[i][j]>>s[i][j];
}
for(int i=0;i<n;++i){
fill(dis[i], dis[i]+n, 1e9+5);
dis[i][i]=0;
}
int u, v, w;
for(int i=0;i<m;++i){
cin>>u>>v>>w;
dis[--u][--v]=w;
}
for(int o=0;o<n;++o){
for(int i=0;i<n;++i){
for(int j=0;j<n;++j)
dis[i][j]=min(dis[i][j], dis[i][o]+dis[o][j]);
}
}
for(int i=0;i<n;++i){
for(int j=0;j<n;++j){
if(dis[i][j]==5+1e9)
dis[i][j]=0;
else
c[i][j]=1;
}
}
for(int i=0;i<n;++i){
for(int j=0;j<n;++j){
for(int o=0;o<k;++o){
if(b[i][o]!=-1 && s[j][o]!=-1)
a[i][j]=max(a[i][j], s[j][o]-b[i][o]);
}
}
}
int l=0, r=1e9;
while(l<r-1){
int mid=(l+r)/2;
if(ok(mid))
l=mid;
else
r=mid;
}
cout<<l;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
55 ms |
1164 KB |
Output is correct |
| 2 |
Correct |
35 ms |
1228 KB |
Output is correct |
| 3 |
Correct |
24 ms |
1248 KB |
Output is correct |
| 4 |
Correct |
5 ms |
716 KB |
Output is correct |
| 5 |
Correct |
4 ms |
716 KB |
Output is correct |
| 6 |
Correct |
5 ms |
716 KB |
Output is correct |
| 7 |
Correct |
4 ms |
716 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
716 KB |
Output is correct |
| 11 |
Correct |
4 ms |
716 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
4 ms |
792 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
716 KB |
Output is correct |
| 2 |
Correct |
4 ms |
716 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
3 ms |
716 KB |
Output is correct |
| 5 |
Correct |
3 ms |
716 KB |
Output is correct |
| 6 |
Correct |
4 ms |
716 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
4 ms |
792 KB |
Output is correct |
| 9 |
Correct |
5 ms |
716 KB |
Output is correct |
| 10 |
Correct |
4 ms |
716 KB |
Output is correct |
| 11 |
Correct |
5 ms |
716 KB |
Output is correct |
| 12 |
Correct |
5 ms |
716 KB |
Output is correct |
| 13 |
Correct |
6 ms |
716 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
716 KB |
Output is correct |
| 16 |
Correct |
3 ms |
716 KB |
Output is correct |
| 17 |
Correct |
2 ms |
716 KB |
Output is correct |
| 18 |
Correct |
3 ms |
716 KB |
Output is correct |
| 19 |
Correct |
6 ms |
716 KB |
Output is correct |
| 20 |
Correct |
4 ms |
716 KB |
Output is correct |
| 21 |
Correct |
4 ms |
716 KB |
Output is correct |
| 22 |
Correct |
5 ms |
716 KB |
Output is correct |
| 23 |
Correct |
5 ms |
716 KB |
Output is correct |
| 24 |
Correct |
5 ms |
716 KB |
Output is correct |
| 25 |
Correct |
5 ms |
716 KB |
Output is correct |
| 26 |
Correct |
0 ms |
332 KB |
Output is correct |
| 27 |
Correct |
7 ms |
716 KB |
Output is correct |
| 28 |
Correct |
5 ms |
716 KB |
Output is correct |
| 29 |
Correct |
4 ms |
716 KB |
Output is correct |
| 30 |
Correct |
4 ms |
716 KB |
Output is correct |
| 31 |
Correct |
3 ms |
716 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
716 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
7 ms |
716 KB |
Output is correct |
| 4 |
Correct |
5 ms |
716 KB |
Output is correct |
| 5 |
Correct |
4 ms |
716 KB |
Output is correct |
| 6 |
Correct |
4 ms |
716 KB |
Output is correct |
| 7 |
Correct |
3 ms |
716 KB |
Output is correct |
| 8 |
Correct |
35 ms |
1208 KB |
Output is correct |
| 9 |
Correct |
81 ms |
1292 KB |
Output is correct |
| 10 |
Correct |
37 ms |
1228 KB |
Output is correct |
| 11 |
Correct |
41 ms |
1228 KB |
Output is correct |
| 12 |
Correct |
41 ms |
1180 KB |
Output is correct |
| 13 |
Correct |
33 ms |
1228 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
716 KB |
Output is correct |
| 2 |
Correct |
4 ms |
716 KB |
Output is correct |
| 3 |
Correct |
5 ms |
716 KB |
Output is correct |
| 4 |
Correct |
5 ms |
716 KB |
Output is correct |
| 5 |
Correct |
6 ms |
716 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
2 ms |
716 KB |
Output is correct |
| 8 |
Correct |
3 ms |
716 KB |
Output is correct |
| 9 |
Correct |
2 ms |
716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
716 KB |
Output is correct |
| 11 |
Correct |
6 ms |
716 KB |
Output is correct |
| 12 |
Correct |
4 ms |
716 KB |
Output is correct |
| 13 |
Correct |
4 ms |
716 KB |
Output is correct |
| 14 |
Correct |
5 ms |
716 KB |
Output is correct |
| 15 |
Correct |
5 ms |
716 KB |
Output is correct |
| 16 |
Correct |
5 ms |
716 KB |
Output is correct |
| 17 |
Correct |
35 ms |
1208 KB |
Output is correct |
| 18 |
Correct |
81 ms |
1292 KB |
Output is correct |
| 19 |
Correct |
37 ms |
1228 KB |
Output is correct |
| 20 |
Correct |
41 ms |
1228 KB |
Output is correct |
| 21 |
Correct |
41 ms |
1180 KB |
Output is correct |
| 22 |
Correct |
33 ms |
1228 KB |
Output is correct |
| 23 |
Correct |
5 ms |
716 KB |
Output is correct |
| 24 |
Correct |
0 ms |
332 KB |
Output is correct |
| 25 |
Correct |
7 ms |
716 KB |
Output is correct |
| 26 |
Correct |
5 ms |
716 KB |
Output is correct |
| 27 |
Correct |
4 ms |
716 KB |
Output is correct |
| 28 |
Correct |
4 ms |
716 KB |
Output is correct |
| 29 |
Correct |
3 ms |
716 KB |
Output is correct |
| 30 |
Correct |
55 ms |
1164 KB |
Output is correct |
| 31 |
Correct |
35 ms |
1228 KB |
Output is correct |
| 32 |
Correct |
24 ms |
1248 KB |
Output is correct |
| 33 |
Correct |
5 ms |
716 KB |
Output is correct |
| 34 |
Correct |
4 ms |
716 KB |
Output is correct |
| 35 |
Correct |
5 ms |
716 KB |
Output is correct |
| 36 |
Correct |
4 ms |
716 KB |
Output is correct |
| 37 |
Correct |
0 ms |
332 KB |
Output is correct |
| 38 |
Correct |
3 ms |
716 KB |
Output is correct |
| 39 |
Correct |
3 ms |
716 KB |
Output is correct |
| 40 |
Correct |
4 ms |
716 KB |
Output is correct |
| 41 |
Correct |
0 ms |
332 KB |
Output is correct |
| 42 |
Correct |
4 ms |
792 KB |
Output is correct |
| 43 |
Correct |
32 ms |
1228 KB |
Output is correct |
| 44 |
Correct |
35 ms |
1228 KB |
Output is correct |
| 45 |
Correct |
43 ms |
1216 KB |
Output is correct |
| 46 |
Correct |
36 ms |
1228 KB |
Output is correct |
| 47 |
Correct |
37 ms |
1264 KB |
Output is correct |
| 48 |
Correct |
37 ms |
1268 KB |
Output is correct |
| 49 |
Correct |
87 ms |
1220 KB |
Output is correct |
| 50 |
Correct |
0 ms |
332 KB |
Output is correct |
| 51 |
Correct |
0 ms |
332 KB |
Output is correct |
| 52 |
Correct |
33 ms |
1228 KB |
Output is correct |
| 53 |
Correct |
38 ms |
1228 KB |
Output is correct |
| 54 |
Correct |
21 ms |
1292 KB |
Output is correct |
| 55 |
Correct |
35 ms |
1276 KB |
Output is correct |
| 56 |
Correct |
36 ms |
1228 KB |
Output is correct |
| 57 |
Correct |
0 ms |
332 KB |
Output is correct |
| 58 |
Correct |
5 ms |
716 KB |
Output is correct |
| 59 |
Correct |
5 ms |
716 KB |
Output is correct |
| 60 |
Correct |
4 ms |
716 KB |
Output is correct |
| 61 |
Correct |
89 ms |
1232 KB |
Output is correct |
| 62 |
Correct |
85 ms |
1204 KB |
Output is correct |
| 63 |
Correct |
0 ms |
332 KB |
Output is correct |
