#include<stdio.h>
int main(){
    int limit;
    scanf("%d", &limit);
    if (limit < 0){
        printf("Invalid input\n");
        return 1;
    }
    int a = 0, b = 1,nextTerm;
    if (limit >= 0){
       printf("%d", a);
    }
    if (limit >= 1){
        pri
    }
    nextTerm = a - b;
    while(nextTerm >= limit){
        a=b;
        b=nextTerm;
        nextTerm = a-b;
    }
    return 0;
}