#include <stdio.h>

int main(){
	int L, M, N;
	scanf("%d%d%d", &L, &M, &N);
	M += N / 25;
	N = N % 25;
	L += M / 4;
	M = M % 4;
	L = L % 10;
	printf("%d\n", L + M + N);
	return 0;
}