Submission

Score: 100

User: Namo

Problemset: Sigma Croissant

Language: cpp

Time: 0.003 second

Submitted On: 2025-07-27 18:31:46

#include <stdio.h>

main() {
	long long a,c=0;
	scanf("%lld", &a);
	for(int i = 1; i <= a; i++) {
		long long b = 1;
		for(int j = i; j >= 1; j--) {
			b *= j;
		}
		c += b;
}
printf("%lld", c);
}