Submission #443024

#	Time	Username	Problem	Language	Result	Execution time	Memory
443024		ltf0501	Dungeons Game (IOI21_dungeons)	C++17	50 / 100	7085 ms	415700 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;

const int kN = 4e5 + 10;
const int kC = 25;
// subtask 3
int n;
vector<int> s, p, w, l;
long long suf[kN];
int climb[2][kC][kN], MAX; // 0: win, 1: lose
long long max_pow[2][kC][kN], gained_pow[2][kC][kN];
void init(int _n, vector<int> _s, vector<int> _p, vector<int> _w, vector<int> _l) {
  n = _n, s = _s, p = _p, w = _w, l = _l;
  
  for(int i = n - 1; i >= 0; i--) suf[i] = s[i] + suf[w[i]], MAX = max(MAX, s[i]);
  for(int i = 0; i < n; i++) {
    climb[0][0][i] = w[i];
    climb[1][0][i] = l[i];

    max_pow[0][0][i] = s[i];
    max_pow[1][0][i] = s[i] - 1;

    gained_pow[0][0][i] = s[i];
    gained_pow[1][0][i] = p[i];
  }
  climb[0][0][n] = n;
  climb[1][0][n] = n;

  for(int j = 1; j < kC; j++) {
    for(int i = 0; i <= n; i++) {
      climb[0][j][i] = climb[0][j - 1][climb[0][j - 1][i]];
      climb[1][j][i] = climb[1][j - 1][climb[1][j - 1][i]];

      max_pow[0][j][i] = max(max_pow[0][j - 1][i], max_pow[0][j - 1][climb[0][j - 1][i]] - gained_pow[0][j - 1][i]);
      max_pow[1][j][i] = min(max_pow[1][j - 1][i], max_pow[1][j - 1][climb[1][j - 1][i]] - gained_pow[1][j - 1][i]);

      gained_pow[0][j][i] = gained_pow[0][j - 1][i] + gained_pow[0][j - 1][climb[0][j - 1][i]];
      gained_pow[1][j][i] = gained_pow[1][j - 1][i] + gained_pow[1][j - 1][climb[1][j - 1][i]];
    }
  }

	return;
}

long long simulate(int x, int z) {
  long long res = z;
  int cnt = 0;
  while(x < n) {
    cnt++;
    bool flag = (res < s[x]);
    for(int j = kC - 1; j >= 0; j--) {
      auto Check = [&]()->bool {
        if(flag) return res > max_pow[flag][j][x];
        else return res < max_pow[flag][j][x];
      };
      if(Check()) continue;
      res += gained_pow[flag][j][x], x = climb[flag][j][x];
    }
  }
  return res;
}

• Subtask 1: 11 / 11
• Subtask 2: 26 / 26
• Subtask 3: 13 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 27
• Subtask 6: 0 / 11