#include <stdio.h>

int main(void) {
	int L, L1, M, M1, N;
	scanf("%d", &L);
	scanf("%d", &M);
	scanf("%d", &N);
	M1 = N / 25;
	N %= 25;
	L1 = (M + M1) / 4;
	M = (M + M1) % 4;
	L = (L + L1) % 10;
	//printf("%d %d %d\n", L, M, N);
	//printf("%d %d\n", L1, M1);
	printf("%d\n", L + M + N);
	
	return 0;
}