Submission

Score: 100

User: I_am_me

Problemset: กองส้ม

Language: c

Time: 0.003 second

Submitted On: 2025-10-12 17:54:43

#include <stdio.h>
int main() {
    int l,n ;
    scanf("%d %d",&l,&n);
    int total = l*(l+1)*(2*l+1)/6 ;
    int remain = total - n;
    int sumofpiles ;
    for(int i = 1;i<=l;i++){
        if (remain == 0) {
            printf("0") ;
            break;
        }
        sumofpiles += (l-i+1)*(l-i+1) ;
        if(sumofpiles >= remain) {
            printf("%d",i) ;
            break;
        }
    }
    return 0;
}