import std.stdio, std.algorithm, std.string, std.conv, std.array;

void main() {
    int calc(int base, int rate) {
        return base * (100 + rate) / 100;
    }

    for(;;) {
        auto input = readln.chomp.split(" ").map!(to!int).array;
        if ( input == [0, 0, 0] ) break;
        immutable x = input[0], y = input[1], s = input[2];

        int res = 0;

        for( int i=1; i<s; ++i ) {
            for( int j=1; j<s; ++j ) {
                if ( calc(i, x) + calc(j, x) == s ) {
                    res = max(res, calc(i, y) + calc(j, y));
                }
            }
        }

        res.writeln;
    }
}