Submission #833509

#	Time	Username	Problem	Language	Result	Execution time	Memory
833509		vjudge1	Exam (eJOI20_exam)	C++17	14 / 100	1068 ms	8528 KiB

exam

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int MX = 15;

int N;
int H[MX], T[MX];
map<vector<int>, int> memo;

int f(vector<int> v) {
      if(memo.count(v)) return memo[v];

      int res = 0;

      for(int i = 0; i < N; i++) res += v[i] == T[i];

      for(int l = 0; l < N; l++) {
            int mx = 0;
            for(int r = l; r < N; r++) {
                  mx = max(mx, v[r]);

                  vector<int> nv = v;

                  for(int k = l; k <= r; k++) nv[k] = mx;

                  if(nv != v)
                        res = max(res, f(nv));
            }
      }

      return memo[v] = res;
}

int main() {
      cin.tie(0); ios_base::sync_with_stdio(0);

      cin >> N;
      for(int i = 0; i < N; i++) cin >> H[i];
      for(int i = 0; i < N; i++) cin >> T[i];
      
      vector<int> v;
      for(int i = 0; i < N; i++) v.push_back(H[i]);

      cout << f(v) << '\n';
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22