Submission

Score: 100

User: Whatthepoop

Problemset: อนุกรม

Language: c

Time: 0.002 second

Submitted On: 2025-10-11 10:18:47

#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
	
	long long a = 1;
	long long b = 1;
	long long c;
    if(n == 1 || n == 2) printf("1");
    else{
    	for(int i = 2; i < n; i++){
    		c = a+b;
    		a=b;
    		b=c;
		}
		printf("%lld", c);
	}

    return 0;
}