Submission #973455

#	Time	Username	Problem	Language	Result	Execution time	Memory
973455		pcc	Password (RMI18_password)	C++17	50 / 100	260 ms	1204 KiB

password

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

int query(string s);

string guess(int N,int S){
	string tans;
	vector<int> cnt(S,0);
	for(int i = 0;i<S;i++){
		string tmp(N,'a'+i);
		cnt[i] = query(tmp);
	}
	for(int i = 0;i<N;i++){
		char tar;
		for(int j = 0;j<S;j++){
			if(cnt[j]){
				tar = 'a'+j;
				break;
			}
		}
		for(int j = tar-'a'+1;j<S;j++){
			if(!cnt[j])continue;
			string tmp = tans+tar+string(cnt[j],'a'+j);
			if(query(tmp) != tmp.size())tar = 'a'+j;
		}
		tans += tar;
		cnt[tar-'a']--;
	}
	return tans;
}

Compilation message (stderr)

password.cpp: In function 'std::string guess(int, int)':
password.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |    if(query(tmp) != tmp.size())tar = 'a'+j;
      |       ~~~~~~~~~~~^~~~~~~~~~~~~
password.cpp:21:15: warning: 'tar' may be used uninitialized in this function [-Wmaybe-uninitialized]
   21 |   for(int j = tar-'a'+1;j<S;j++){
      |               ^~~

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