Submission #918050

#	Time	Username	Problem	Language	Result	Execution time	Memory
918050		vjudge1	Password (RMI18_password)	C++17	100 / 100	111 ms	1720 KiB

password

#include <bits/stdc++.h>
 
using namespace std;
 
int query(string str);
 
string a, q;
vector<string> v;
 
string merge(string s1, string s2){
    int p1 = 0, p2 = 0;
    while(p1 < s1.size() && p2 < s2.size()){
        q = s1;
        q.insert(q.begin() + p1, s2[p2]);
        if(query(q) == q.size()){
            s1 = q;
            p2++;
        }
        p1++;
    }
    for(int i = p2; i < s2.size(); i++){
        s1 += s2[i];
    }
    return s1;
}
 
bool comp(string& a, string& b){
    return a.size() > b.size();
}
 
string guess(int n, int s){
    for(char c = 'a'; c <= 'a' + s - 1; c++){
        a = "";
        for(int i = 1; i <= n; i++){
            a += c;
        }
        int cnt = query(a);
        if(cnt == 0) continue;
        a = "";
        for(int i = 1; i <= cnt; i++){
            a += c;
        }
        v.push_back(a);
    }
    sort(v.begin(), v.end(), comp);
    while(v.size() > 1){
        a = merge(v[v.size() - 1], v[v.size() - 2]);
        v.pop_back();
        v.pop_back();
        v.push_back(a);
        sort(v.begin(), v.end(), comp);
    }
    return v[0];
}

Compilation message (stderr)

password.cpp: In function 'std::string merge(std::string, std::string)':
password.cpp:12:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     while(p1 < s1.size() && p2 < s2.size()){
      |           ~~~^~~~~~~~~~~
password.cpp:12:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     while(p1 < s1.size() && p2 < s2.size()){
      |                             ~~~^~~~~~~~~~~
password.cpp:15:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         if(query(q) == q.size()){
      |            ~~~~~~~~~^~~~~~~~~~~
password.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i = p2; i < s2.size(); i++){
      |                     ~~^~~~~~~~~~~

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