#include<stdio.h>
void printNaturalNumbers(int current, int n) {
    
}
if (current > n) {
    return;
    
}
printf("%d", current);
}
int main() {
    printfNaturalNumbers(current + 1,n);
    
}
int main() {
    int n;
    scanf("%d", &n);
    if (n < 1) {
        printfNamturalNumbers(1, n);
    }
    return 0;
}