Submission

PPPPPPPPPP

Score: 100

User: putter16488

Problemset: อนุกรม

Language: cpp

Time: 0.001 second

Submitted On: 2024-09-26 16:42:19

#include<stdio.h>
long long arr[110];
main(){
	int a,b,c;
	
	scanf("%d",&a);
	for(int i=0;i<=100;i++){
		if(i==0){
			arr[0]=1;
		}
		else if(i==1){
			arr[1]=1;
		}
		else {
			b=i-1;
			c=i-2;
			arr[i]=arr[b]+arr[c];
		}
	}
	printf("%ld",arr[a-1]);
}