Submission #784178

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
784178	2023-07-15 20:33:42	tvladm2009	Xylophone (JOI18_xylophone)	C++17	47 / 100	80 ms	856 KiB

xylophone

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#include <bits/stdc++.h>
#include "xylophone.h"
using namespace std;
map<pair<int, int>, int> mp;
int ask(int l, int r) {
  if (mp.count({l, r}) > 0) {
    return mp[{l, r}];
  }
  int x = query(l, r);
  mp[{l, r}] = x;
  return x;
}
void solve(int n) {
  mp.clear();
  int mn = -1, mx = -1;
  int low = 1, high = n;
  while (low <= high) {
    int mid = (low + high) / 2;
    if (ask(1, mid) == n - 1) {
      mx = mid;
      high = mid - 1;
    } else {
      low = mid + 1;
    }
  }
  low = 1, high = mx - 1;
 
 
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• Subtask 1: 11 / 11
• Subtask 2: 36 / 36
• Subtask 3: 0 / 53