#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using ti3=tuple<int,int,int>;
ll b[105][1005],s[105][1005],mx[105][105],d[105][105],d2[105][105];
int main(){
ios::sync_with_stdio(false); cin.tie(0);
int n,m,K; cin>>n>>m>>K;
for(int i=1;i<=n;++i){
for(int j=1;j<=K;++j){
cin>>b[i][j]>>s[i][j];
}
}
for(int i=1;i<=n;++i){
for(int j=1;j<=n;++j){
for(int k=1;k<=K;++k){
if(b[i][k]!=-1 && s[j][k]!=-1) mx[i][j]=max(mx[i][j],-b[i][k]+s[j][k]);
}
}
}
for(int i=1;i<=n;++i){
for(int j=1;j<=n;++j) d[i][j]=1e18;
d[i][i]=0;
}
for(int i=0,u,v,w;i<m;++i) cin>>u>>v>>w, d[u][v]=min(d[u][v],(ll)w);
for(int k=1;k<=n;++k) for(int i=1;i<=n;++i) for(int j=1;j<=n;++j) d[i][j]=min(d[i][j],d[i][k]+d[k][j]);
int l=0,r=1e9;
while(l<r){
int mid=l+r+1>>1;
for(int i=1;i<=n;++i){
for(int j=1;j<=n;++j) d2[i][j]=-mx[i][j]+mid*min(ll(1e18)/mid,d[i][j]);
d2[i][i]=1e18;
}
for(int k=1;k<=n;++k) for(int i=1;i<=n;++i) for(int j=1;j<=n;++j) d2[i][j]=min(d2[i][j],d2[i][k]+d2[k][j]);
bool ok=0;
for(int i=1;i<=n&&!ok;++i) if(d2[i][i]<=0) ok=1;
if(ok) l=mid;
else r=mid-1;
}
cout<<l;
return 0;
}
Compilation message
merchant.cpp: In function 'int main()':
merchant.cpp:32:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
32 | int mid=l+r+1>>1;
| ~~~^~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
48 ms |
2188 KB |
Output is correct |
2 |
Correct |
26 ms |
1436 KB |
Output is correct |
3 |
Correct |
27 ms |
1372 KB |
Output is correct |
4 |
Correct |
4 ms |
860 KB |
Output is correct |
5 |
Correct |
4 ms |
860 KB |
Output is correct |
6 |
Correct |
4 ms |
860 KB |
Output is correct |
7 |
Correct |
4 ms |
860 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
4 ms |
860 KB |
Output is correct |
10 |
Correct |
4 ms |
856 KB |
Output is correct |
11 |
Correct |
4 ms |
860 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
4 ms |
860 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
860 KB |
Output is correct |
2 |
Correct |
4 ms |
860 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
4 ms |
860 KB |
Output is correct |
5 |
Correct |
4 ms |
856 KB |
Output is correct |
6 |
Correct |
4 ms |
860 KB |
Output is correct |
7 |
Correct |
1 ms |
344 KB |
Output is correct |
8 |
Correct |
4 ms |
860 KB |
Output is correct |
9 |
Correct |
4 ms |
860 KB |
Output is correct |
10 |
Correct |
4 ms |
860 KB |
Output is correct |
11 |
Correct |
4 ms |
860 KB |
Output is correct |
12 |
Correct |
4 ms |
860 KB |
Output is correct |
13 |
Correct |
4 ms |
860 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
5 ms |
868 KB |
Output is correct |
16 |
Correct |
4 ms |
860 KB |
Output is correct |
17 |
Correct |
4 ms |
996 KB |
Output is correct |
18 |
Correct |
4 ms |
860 KB |
Output is correct |
19 |
Correct |
6 ms |
860 KB |
Output is correct |
20 |
Correct |
4 ms |
1020 KB |
Output is correct |
21 |
Correct |
4 ms |
860 KB |
Output is correct |
22 |
Correct |
4 ms |
1000 KB |
Output is correct |
23 |
Correct |
4 ms |
860 KB |
Output is correct |
24 |
Correct |
5 ms |
860 KB |
Output is correct |
25 |
Correct |
4 ms |
856 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
4 ms |
1020 KB |
Output is correct |
28 |
Correct |
5 ms |
856 KB |
Output is correct |
29 |
Correct |
4 ms |
856 KB |
Output is correct |
30 |
Correct |
4 ms |
860 KB |
Output is correct |
31 |
Correct |
4 ms |
860 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
856 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
4 ms |
1020 KB |
Output is correct |
4 |
Correct |
5 ms |
856 KB |
Output is correct |
5 |
Correct |
4 ms |
856 KB |
Output is correct |
6 |
Correct |
4 ms |
860 KB |
Output is correct |
7 |
Correct |
4 ms |
860 KB |
Output is correct |
8 |
Correct |
30 ms |
1660 KB |
Output is correct |
9 |
Correct |
62 ms |
2140 KB |
Output is correct |
10 |
Correct |
29 ms |
1372 KB |
Output is correct |
11 |
Correct |
30 ms |
1624 KB |
Output is correct |
12 |
Correct |
30 ms |
1628 KB |
Output is correct |
13 |
Correct |
28 ms |
1580 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
860 KB |
Output is correct |
2 |
Correct |
4 ms |
860 KB |
Output is correct |
3 |
Correct |
4 ms |
860 KB |
Output is correct |
4 |
Correct |
4 ms |
860 KB |
Output is correct |
5 |
Correct |
4 ms |
860 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
5 ms |
868 KB |
Output is correct |
8 |
Correct |
4 ms |
860 KB |
Output is correct |
9 |
Correct |
4 ms |
996 KB |
Output is correct |
10 |
Correct |
4 ms |
860 KB |
Output is correct |
11 |
Correct |
6 ms |
860 KB |
Output is correct |
12 |
Correct |
4 ms |
1020 KB |
Output is correct |
13 |
Correct |
4 ms |
860 KB |
Output is correct |
14 |
Correct |
4 ms |
1000 KB |
Output is correct |
15 |
Correct |
4 ms |
860 KB |
Output is correct |
16 |
Correct |
5 ms |
860 KB |
Output is correct |
17 |
Correct |
30 ms |
1660 KB |
Output is correct |
18 |
Correct |
62 ms |
2140 KB |
Output is correct |
19 |
Correct |
29 ms |
1372 KB |
Output is correct |
20 |
Correct |
30 ms |
1624 KB |
Output is correct |
21 |
Correct |
30 ms |
1628 KB |
Output is correct |
22 |
Correct |
28 ms |
1580 KB |
Output is correct |
23 |
Correct |
4 ms |
856 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
4 ms |
1020 KB |
Output is correct |
26 |
Correct |
5 ms |
856 KB |
Output is correct |
27 |
Correct |
4 ms |
856 KB |
Output is correct |
28 |
Correct |
4 ms |
860 KB |
Output is correct |
29 |
Correct |
4 ms |
860 KB |
Output is correct |
30 |
Correct |
48 ms |
2188 KB |
Output is correct |
31 |
Correct |
26 ms |
1436 KB |
Output is correct |
32 |
Correct |
27 ms |
1372 KB |
Output is correct |
33 |
Correct |
4 ms |
860 KB |
Output is correct |
34 |
Correct |
4 ms |
860 KB |
Output is correct |
35 |
Correct |
4 ms |
860 KB |
Output is correct |
36 |
Correct |
4 ms |
860 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
4 ms |
860 KB |
Output is correct |
39 |
Correct |
4 ms |
856 KB |
Output is correct |
40 |
Correct |
4 ms |
860 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
4 ms |
860 KB |
Output is correct |
43 |
Correct |
28 ms |
1536 KB |
Output is correct |
44 |
Correct |
29 ms |
1624 KB |
Output is correct |
45 |
Correct |
49 ms |
2140 KB |
Output is correct |
46 |
Correct |
29 ms |
1624 KB |
Output is correct |
47 |
Correct |
33 ms |
1628 KB |
Output is correct |
48 |
Correct |
30 ms |
1628 KB |
Output is correct |
49 |
Correct |
65 ms |
2092 KB |
Output is correct |
50 |
Correct |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
28 ms |
1496 KB |
Output is correct |
53 |
Correct |
29 ms |
1372 KB |
Output is correct |
54 |
Correct |
36 ms |
1372 KB |
Output is correct |
55 |
Correct |
28 ms |
1372 KB |
Output is correct |
56 |
Correct |
28 ms |
1372 KB |
Output is correct |
57 |
Correct |
1 ms |
348 KB |
Output is correct |
58 |
Correct |
5 ms |
860 KB |
Output is correct |
59 |
Correct |
5 ms |
856 KB |
Output is correct |
60 |
Correct |
5 ms |
860 KB |
Output is correct |
61 |
Correct |
72 ms |
2128 KB |
Output is correct |
62 |
Correct |
54 ms |
2128 KB |
Output is correct |
63 |
Correct |
0 ms |
348 KB |
Output is correct |