Submission #223616

#	Time	Username	Problem	Language	Result	Execution time	Memory
223616		Haunted_Cpp	Grudanje (COCI19_grudanje)	C++17	70 / 70	206 ms	13928 KiB

grudanje

#include <iostream>
#include <cstring>
#include <algorithm>
 
#pragma GCC optimize ("Ofast")
#pragma GCC target("fma,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
 
using namespace std;

const int N = 1e5 + 5;
const int Z = 26;

int dp [N][Z];
pair<int, int> q [N];
int snow [N];


int main () {
  ios::sync_with_stdio(0);
  cin.tie(0);
  string w;
  cin >> w;
  int n;
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> q[i].first >> q[i].second;
    --q[i].first; --q[i].second;
  }
  for (int i = 0; i < (int) w.size(); i++) {
    cin >> snow[i];
    --snow[i];
  }   
  int lo = 0, hi = (int) w.size();
  while (lo < hi) {
    int mid = lo + (hi - lo) / 2;
    string cur = w;
    for (int i = 0; i < mid; i++) {
      cur[snow[i]] = '*';
    }
    memset (dp, 0, sizeof(dp));
    for (int i = 0; i < (int) w.size(); i++) {
      if (cur[i] != '*') ++dp[i][cur[i] - 'a'];
      if (i) {
        for (int j = 0; j < 26; j++) {
          dp[i][j] += dp[i - 1][j];
        }
      }
    }
    bool valid = true;
    for (int i = 0; i < n; i++) {
      int baixo = q[i].first;
      int cima = q[i].second;
      for (int j = 0; j < 26; j++) {
        int cnt = dp[cima][j] - (baixo - 1 < 0 ? 0 : dp[baixo - 1][j]);
        valid &= (cnt <= 1);
      }
    }
    if (valid) hi = mid;
    else lo = mid + 1;
  }
  cout << hi << '\n';
  return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 7 / 7
• Subtask 5: 7 / 7
• Subtask 6: 7 / 7
• Subtask 7: 7 / 7
• Subtask 8: 7 / 7
• Subtask 9: 7 / 7
• Subtask 10: 7 / 7