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- #include<stdio.h>
- #include<stdlib.h>
- int main()
- {
- int t,a,b,c,d,i=0;
- scanf("%d",&t);
- for(i=0;i<t;i++)
- {
- scanf("%d%d%d%d",&a,&b,&c,&d);
- if(abs(a-c)==abs(b-d))
- {
- printf("Yes\n");
- }
- else
- printf("No\n");
- }
- return 0;
- }
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