#include <iostream>

int main() {
    int L, M, N; // 100, 25, 1
    
    std::cin >> L >> M >> N;
    
    while (N >= 25) {
        N -= 25;
        M += 1;
    }
    
    while (M >= 4) {
        M -= 4;
        L += 1;
    }
    
    while (L >= 10) {
        L -= 10;
    }
    
    std::cout << (L + M + N) << std::endl;
	
	return 0;
}