Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: Hxluk.ka

Problemset: นักบินอวกาศ

Language: c

Time: 0.002 second

Submitted On: 2025-10-11 11:16:55

#include <stdio.h>

int main() {
	int a;
	scanf("%d", &a);
	if (a < 0) return 0;
	
	int up = 4;
	int h = 0;
	for (int i = 0; i < a; i++, up+=6) {
		h+=up;
	}
	printf("%d", h);
	return 0;
}