Submission #164349

#	Time	Username	Problem	Language	Result	Execution time	Memory
164349		aggu_01000101	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

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

string guess_sequence(int n){
    string lol[] = {"A", "B", "X", "Y"};
    vector<string> t;
    int taken = 0;
    while(press(lol[taken])==0) taken++;
    for(int i  = 0;i<4;i++){
        if(i==taken) continue;
        t.push_back(lol[i]);
    }
    string s = lol[taken];
    for(int i = 1;i<(n-1);i++){
        int lol1 = press(s + t[0] + s + t[1] + t[0] + s + t[1] + t[2] + s + s[1][1]);
        if(lol1==0){
            s+=t[2];
        }
        else if(lol1==(i+1)){
            s+=t[0];
        }
        else{
            s+=t[1];
        }
    }
    if(n==1) return s;
    taken = 0;
    while(press(s+lol[taken])==0) taken++;
    s+=lol[taken];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:16:81: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}[int]' for array subscript
   16 |         int lol1 = press(s + t[0] + s + t[1] + t[0] + s + t[1] + t[2] + s + s[1][1]);
      |                                                                                 ^