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Cod sursa(job #145762)
#include<stdio.h>
#define nmax 150
#define inf 2000000
int a[nmax][nmax], n, i, j, k;
int main()
{
freopen("royfloyd.in", "r", stdin);
freopen("royfloyd.out", "w", stdout);
scanf("%d", &n);
for(i=1; i<=n; i++)
for(j=1; j<=n; j++) scanf("%d", &a[i][j]);
for(i=1; i<=n; i++)
for(j=1; j<=n; j++) if( i!=j && !a[i][j] ) a[i][j]=inf;
for(k=1; k<=n; k++)
for(i=1; i<=n; i++)
for(j=1; j<=n; j++)
if( a[i][j] < a[i][k] + a[k][j] ) a[i][j]=a[i][k]+a[k][j];
for(i=1; i<=n; i++){
for(j=1; j<=n; j++) printf("%d ", a[i][j]);
printf("\n");
}
return 0;
}