#include <stdio.h> int main(int argc, char* argv[]) { int n; scanf("%d",&n); while ((n--)>0){ int t; scanf("%d",&t); int a[1000],b[1000]; int i; for (i=0;i<t;i++){ scanf("%d%d",&a[i],&b[i]); } int s=b[0]-a[0]; for (i=1;i<t;i++){ if (s!=(b[i]-a[i])) break; } if (i==t) printf("YES\n"); else printf("NO\n"); } return 0; } |
Double click to view unformatted code.