Submission #538649

#	Time	Username	Problem	Language	Result	Execution time	Memory
538649		AdamGS	Password (RMI18_password)	C++17	0 / 100	390 ms	208 KiB

password

#include<bits/stdc++.h>
using namespace std;
#define rep(a, b) for(int a = 0; a < (b); ++a)
int query(string p);
string guess(int n, int s) {
  string ans="";
  rep(i, n-s) {
    int p=0, k=s-1;
    while(p<k) {
      int sr=(p+k)/2;
      string p=ans;
      rep(i, sr+1) p+=char(i+'a');
      int a=query(p);
      if(a==n) return p;
      if(a>i) k=sr; else p=sr+1;
    }
    ans+=char(p+'a');
  }
  for(int i=max(n-s, 0); i<n; ++i) {
    int x=-1;
    rep(j, s) if(x==-1) {
      string p=ans+char(j+'a');
      int a=query(p);
      if(a==n) return p;
      if(a>i) x=j;
    }
    ans+=char(x+'a');
  }
  return ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 30
• Subtask 5: 0 / 20