#include<cstdio>
#include<algorithm>
#define rep(i,a) for(int i=0;i<(a);++i)

int L, M, N;
int V[4] = { 1000, 100, 25, 1 };

int main()
{
	scanf( "%d%d%d", &L, &M, &N );

	int S = L*100+M*25+N, ans = 0;

	rep( i, 4 )
	{
		if( i )
			ans += S/V[i];
		
		S %= V[i];
	}

	printf( "%d\n", ans );

	return 0;
}