Submission

Score: 100

User: FakeAnutin

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-20 20:02:50

#include <stdio.h>
int main(){
	int n; scanf("%d",&n);
	int cc=4;
	int x=10;
	if(n == 0){
		printf("%d",0);
		return 0;
	}
	else if(n==1){
		printf("%d",4);
		return 0;
	}
	for(int i=1;i<n;i++){
		cc = cc+x;
		x+=6;
	}
	printf("%d",cc);
}