View Code of Problem 607

#include<stdio.h>
main()
{
	int k,p,i,j;
	int sumNan=0,sumXp=0;
	scanf("%d %d",&k,&p);
	for(i=1;i<=k;i=i+1){
		for(j=1;j<=p-1;j++){
			sumNan=i*j+sumNan;
		}
	}
	for(i=2;i<=k;i=i+1){
		for(j=1;j<=p-1;j++){
			sumXp=i*j+sumXp;
		}
	}
if((sumNan%p)>(sumNan%p)){
	printf("YES");
}
else{
	printf("NO");
}
}
	

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