Help me in solving SMOL problem

help
,
1

My issue

output was coming but some text is display that is time limit exceeded
why this was came

My code

#include <stdio.h>

int main(void) {
int t,n,k;
scanf("%d",&t);
while(t--){
    scanf("%d%d",&n,&k);
    if(n>=k){
        for(int i=n-1;i<=n;i--){
             n=n-k;
        }
        printf("\n%d",n);
    }
    else 
    printf("\n%d",n);
}
	return 0;
}

Learning course: Level up from 1* to 2*
Problem Link: CodeChef: Practical coding for everyone