Submission #773332

#	Time	Username	Problem	Language	Result	Execution time	Memory
773332		Khizri	Password (RMI18_password)	C++17	50 / 100	375 ms	556 KiB

password

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
using namespace std;
int query(string q);
int mxn=2e5+5;
int k;
string mrg(string a,string b){
    string x;
    int idx=0;
    for(int i=0;i<b.size();i++){
        for(int j=idx;j<=a.size();j++){
            x=a;
            x.insert(x.begin()+j,b[i]);
            if(query(x)==x.size()){
                a=x;
                idx=j;
                break;
            }
        }
    }
    return a;
}
string guess(int n, int kx){
    char cc='a';
    int k=kx;
    kx--;
    while(kx--){
        cc++;
    }
    priority_queue<string,vector<string>,greater<string>>q;
    for(char c='a';c<=cc;c++){
        string s="";
        for(int j=1;j<=n;j++){
            s+=c;
        }
        int x=query(s);
        s="";
        for(int i=1;i<=x;i++){
            s+=c;
        }
        if(s.size()>0){
            q.push(s);
        }
    }
    while(q.size()>1){
        string a=q.top();
        q.pop();
        string b=q.top();
        q.pop();
        string x=mrg(a,b);
        q.push(x);
    }
    return q.top();
}

Compilation message (stderr)

password.cpp: In function 'std::string mrg(std::string, std::string)':
password.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<b.size();i++){
      |                 ~^~~~~~~~~
password.cpp:21:24: 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 j=idx;j<=a.size();j++){
      |                       ~^~~~~~~~~~
password.cpp:24:24: 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(x)==x.size()){
      |                ~~~~~~~~^~~~~~~~~~
password.cpp: In function 'std::string guess(int, int)':
password.cpp:35:9: warning: unused variable 'k' [-Wunused-variable]
   35 |     int k=kx;
      |         ^

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