Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: Peam

Problemset: นักบินอวกาศ

Language: c

Time: 0.002 second

Submitted On: 2025-09-29 20:04:53

#include <stdio.h>
int main(){
    int n;
    scanf("%d", &n);

    int sum = 4, cnt = 4;
    for(int i = 1; i < n; i++){
        sum+=6;
        cnt+=sum;
    }
    if(n == 0){
        printf("0");
        return 0;
    }

    printf("%d", cnt);
    
    return 0;
}