#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;
  if (N >= 25) {
    M += N / 25;
    N %= 25;
  }
  if (M >= 4) {
    L += M / 4;
    M %= 4;
  }
  if (L >= 10) {
    L %= 10;
  }
  printf("%d\n", L + M + N);
  return 0;
}