Submission #1201757

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201757		noop	September (APIO24_september)	C++20	0 / 100	0 ms	328 KiB

september

#include <bits/stdc++.h>
using namespace std;
vector<int> g;
vector<bool> s;
vector<unordered_map<int,int> > u;
int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
  g.resize(N,0);
  s.resize(N,0);
  u.resize(M,{});
  int ans=0,t=0,agt,c,p;
  for (int i=1; i<N; i++){
    g[F[i]]++;
  }
  for (int i=0; i<S[0].size(); i++){
    c=S[0][i];
    if (g[c]){
      t++;
      s[c]=1;
    }
    p=F[c];
    g[p]--;
    if (!g[p] and s[p]){
      t--;
      s[p]=0;
    }
    for (int r=0; r<M; r++){
      c=S[r][i];
      if (!u[r][c]){
        agt++;
      }
      if (u[r][c]<0){
        u[r][c]++;
        if (!u[r][c]){
          agt--;
        }
      }
      else{
        for (int j=0; j<r; j++){
          if (!u[j][c]){
            agt++;
          }
          u[j][c]--;
          if (!u[j][c]){
            agt--;
          }
        }
        for (int j=r+1; j<M; j++){
          if (!u[j][c]){
            agt++;
          }
          u[j][c]--;
          if (!u[j][c]){
            agt--;
          }
        }
      }
    }
    if (!t and !agt){
      ans++;
    }
  }
  return ans;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 5
• Subtask 4: 0 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 11
• Subtask 7: 0 / 9
• Subtask 8: 0 / 11
• Subtask 9: 0 / 9
• Subtask 10: 0 / 16