plata

#include <iostream>

using namespace std;

int main()
{
    long int n, m, s, sum = 0, i;
    cin >> n >> m >> s;
    for(i = 0; sum<s; i++)
    {
        if(i<100)sum+=n;
        if(i>=100) sum+=m;
    }
    cout << i;
    return 0;
}