View Code of Problem 6

#include<stdio.h>
int main(){
  int t,n,l[100],r[100],max,sum;
  scanf("%d",&t);
  while(t--){
    int flag=1;
    scanf("%d",&n);
    for(int i=0;i<n;i++)
    scanf("%d %d",&l[i],&r[i]);
    max=r[0]-l[0];
    for(int i=1;i<n;i++){
      if(max<r[i]-l[i])
        max=r[i]-l[i];
    }
    sum=l[0];
    for(int i=0;i<n-1;i++){
      sum=sum+max;
      if(sum>l[i+1]){
        flag=0;
        break;
      }
    }
      if(flag)
        printf("Yes\n");
    else
      printf("No\n");
  }
    return 0;
}