Submission #309002

#	Time	Username	Problem	Language	Result	Execution time	Memory
309002		bigDuck	Password (RMI18_password)	C++14	40 / 100	142 ms	640 KiB

password

#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount



int query(string str);
/*int query(string str){
cout<<str<<"\n"<<flush; int res; cin>>res; return res;
}*/







string guess(int n, int s){
set<pair<int, char>> ord;
for(char c='a'; c<=('a'+s-1); c++){
    string st="";
    for(int i=0; i<n; i++){st.pb(c);}
    int ln=query(st);
    if(ln==0){continue;}
    ord.insert(mp(ln, c));
}

string res="";
for(int i=0; i<((ord.begin())->ft); i++){
    res.pb((ord.begin())->sc);
}
ord.erase(ord.begin());
while(!ord.empty()){
    auto it=ord.begin();

    vector<int> sum; sum.assign(n+5, 0);
    string s1=res; s1+="a";
    string s2="";
    for(int i=s1.length(); i<n; i++){
        s2.pb(it->sc);
    }s2.erase(s2.end()-1, s2.end());
    for(;!s1.empty();){
        s1.erase(s1.end()-1, s1.end());
        s2.pb(it->sc);
        int ln=query(s1+s2);
        sum[s1.length()]=(ln-((int)s1.length()) );
    }
    int cnt=0;
    for(int i=res.length(); i>=0; i--){
        if(i<(res.length())){
            s1="a"+s1; s1[0]=res[i];
        }
        while(cnt<sum[i]){
            string st="a"; st[0]=(it->sc);
            s1=st+s1; cnt++;
        }

    }
    res=s1;
    ord.erase(it);
}



return res;
}


/*int main(){
cout<<guess(6, 26);




}*/

Compilation message (stderr)

password.cpp: In function 'std::string guess(int, int)':
password.cpp:57:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         if(i<(res.length())){
      |            ~^~~~~~~~~~~~~~~

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