Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- int t,a,b,n,d,e,f,i,j,k,l,p,c;
- cin>>t;
- while(t--)
- {
- d=0;
- cin>>n;
- a=0;
- b=0;
- for(i=0; i<n; i++)
- {
- cin>>p>>c;
- if(p<a || c<b || c>p || (c-b>p-a))
- {
- d=1;
- }
- a=p;
- b=c;
- }
- if(d==0)
- printf("YES\n");
- else
- printf("NO\n");
- }
- return 0;
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement