luogu1359 租用游艇

Posted 2020-09-25 Code_Together

#include<bits/stdc++.h>

using namespace std;

#define INF 1<<29

int n,a[210][210];

void Floyd(){

for(int k=1;k<=n;k++)

for(int i=1;i<=n;i++)

for(int j=1;j<=n;j++)a[i][j]=min(a[i][j],a[i][k]+a[k][j]);

}

int main(){

scanf("%d",&n);

for(int i=1;i<=n;i++)

for(int j=1;j<=n;j++)a[i][j]=INF;

for(int i=1;i<n;i++)

for(int j=i+1;j<=n;j++)scanf("%d",&a[i][j]);

Floyd();

cout<<a[1][n]<<endl;

return0;

}