이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll INF=2e17;
const int MAXN=128;
const int MAXK=1024;
ll mindist[MAXN][MAXN];
ll maxearn[MAXN][MAXN];
ll n,m,k;
ll b[MAXN][MAXK];
ll s[MAXN][MAXK];
ll g[MAXN][MAXN];
bool ok(ll r)
{
for(int i=0;i<MAXN;i++)
{
for(int j=0;j<MAXN;j++)
{
g[i][j]=INF;
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(mindist[i][j]>=INF)continue;
g[i][j]=r*mindist[i][j]-maxearn[i][j];
}
}
/*cout<<r<<endl;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
cout<<g[i][j]<<" ";
}
cout<<endl;
}*/
for(int j=1;j<=n;j++)
{
for(int i=1;i<=n;i++)
{
for(int l=1;l<=n;l++)
{
g[i][l]=min(g[i][l],g[i][j]+g[j][l]);
}
}
}
/*cout<<"-------------\n";
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
cout<<g[i][j]<<" ";
}
cout<<endl;
}*/
for(int i=1;i<=n;i++)
{
if(g[i][i]<=0)return 1;
}
return 0;
}
int main()
{
for(int i=0;i<MAXN;i++)
{
for(int j=0;j<MAXN;j++)
{
mindist[i][j]=INF;
}
}
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<=m;i++)
{
ll v,w,t;
cin>>v>>w>>t;
mindist[v][w]=min(mindist[v][w],t);
}
for(int j=1;j<=n;j++)
{
for(int i=1;i<=n;i++)
{
for(int l=1;l<=n;l++)
{
if(mindist[i][j]+mindist[j][l]<mindist[i][l])
{
mindist[i][l]=mindist[i][j]+mindist[j][l];
}
}
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(mindist[i][j]==INF)continue;
for(int l=1;l<=k;l++)
{
if(s[j][l]==-1||b[i][l]==-1)continue;
maxearn[i][j]=max(maxearn[i][j],s[j][l]-b[i][l]);
}
}
}
ll low=0,high=1000000000,mid,ans;
while(low<=high)
{
mid=(low+high)/2;
if(ok(mid))
{
ans=mid;
low=mid+1;
}
else high=mid-1;
}
cout<<ans<<endl;
return 0;
}
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