#include <bits/stdc++.h>

using namespace std;

using i8 = int8_t; using u8 = uint8_t; using i16 = int16_t; using u16 = uint16_t; using i32 = int32_t; using u32 = uint32_t; using i64 = int64_t; using u64 = uint64_t; using i128 = __int128_t; using u128 = __uint128_t; using f32 = float; using f64 = double;

#define cauto const auto&
#define rep(i,n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
#define ALL(x) (x).begin(),(x).end()

int main() {
  int L, M, N;
  cin >> L >> M >> N;
  int sum = L * 100 + M * 25 + N;
  sum %= 1000;
  int ans = 0;
  ans += sum / 100;
  sum /= 100;
  ans += sum / 25;
  sum /= 25;
  ans += sum;
  printf("%d\n", ans);
  return 0;
}