#include "bits/stdc++.h"
using namespace std;

typedef long long Int;
#define REP(i,n) for(int (i)=0;(i)<(int)(n);++(i))

int main() {
	int L, M, N;
	cin >> L >> M >> N;
	Int total = 100 * L + 25 * M + 1 * N;
	total %= 1000;
	int ans = total / 100 + total / 100 / 25 + total % 25;
	cout << ans << endl;
}