Submission

Score: 100

User: kenkong587

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-01 17:49:16

#include <stdio.h>

int main()
{
    int num;
    
    scanf("%d",&num);
    
    long long a = 0;
    long long b = 1;
    long long sum = 1;
    
    for(int i = 1;i < num;i++){
        sum = a+b;
        a = b;
        b = sum;
    }
    
    if(num == 0){
        sum = 0;
    }
    
    printf("%lld",sum);

    return 0;
}