#include<stdio.h>

int func(int L, int M, int N){
	M += N / 25; N %= 25; 
	L += M / 4; M %= 4; 
	L %= 10; 
	return L + M + N; 
}

int main(int argc, char *argv[]){
	int L = 0, M = 0, N = 0; 
	scanf("%d%d%d", &L, &M, &N);
	printf("%d\n", func(L, M, N));
	return 0;
}