Submission #219958

#	Time	Username	Problem	Language	Result	Execution time	Memory
219958		Basilhijaz	Combo (IOI18_combo)	C++11	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>

string guess_sequence(int N) {
    std::string p = "";
    string ans = "";
    string opt = "ABXY";
    int pos = 0;
    for(int i = 0; i < 4; i++){
        p += opt[i];
        if(press(p)){
            ans += p;
            pos = i;
            break;
        }
        p = "";
    }
    string Fopt = "";
    for(int i = 0; i < 4; i++){
        if(i == pos)continue;
        Fopt += opt[i];
    }
    for(int i = 0; i < N - 1; i++){
        p = "";
        p += ans; p += Fopt[0]; p += ans; p += Fopt[1]; p += Fopt[1];
        p += ans; p += Fopt[1]; p += Fopt[0]; p += ans; p += Fopt[1]; p += Fopt[2];
        if(press(p) == ans.size()){
            ans += Fopt[2];
        }
        else if(press(p) == ans.size() + 1){
            ans += Fopt[0];
        }
        else{
            ans += Fopt[1];
        }
    }
    return ans;
}

Compilation message (stderr)

combo.cpp:3:1: error: 'string' does not name a type; did you mean 'stdin'?
    3 | string guess_sequence(int N) {
      | ^~~~~~
      | stdin