#include <stdio.h>
using namespace std;
int main() {
    double n;  
    double x, y;  
    scanf("%lf %lf %lf", &n, &x, &y);
    double total_cm = n * 100;
    int count = 0;
    double used = 0.0;
    if (used + x <= total_cm) {
        count++;
        used += x;
        while (used + y + x <= total_cm) {
            count++;
            used += (y + x);
        }
        if (used + x <= total_cm) {
            count++;
        }
    }
    printf("%d\n", count);
    return 0;
}
/**************************************************************
	Problem: 1331
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:1144 kb
****************************************************************/