Submission #501526

#	Time	Username	Problem	Language	Result	Execution time	Memory
501526		dnaux	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

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

string guess_sequence(int N){
    string s = "";
    char c1 = 'X',c2 = 'Y',c3 = 'A';
    if(press("XY") != 0){
        if(press("X") != 0){s += 'X';c1 = 'B';}
        else {s += 'Y';c2 = 'B';}
    }
    else{
        if(press('A') != 0)(s += 'A';c3 = 'B';)
        else s += 'B';
    }
    for(int i = 0;i < n - 1; i++){
        if(press(s + c1 + s + c2) > i + 1){
            if(press(s + c1) > i + 1){
                s += c1;
            }
            else{
                s += c2;
            }
        }
        else s += c3;
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:13:18: error: could not convert ''A'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   13 |         if(press('A') != 0)(s += 'A';c3 = 'B';)
      |                  ^~~
      |                  |
      |                  char
combo.cpp:13:37: error: expected ')' before ';' token
   13 |         if(press('A') != 0)(s += 'A';c3 = 'B';)
      |                            ~        ^
      |                                     )
combo.cpp:13:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   13 |         if(press('A') != 0)(s += 'A';c3 = 'B';)
      |         ^~
combo.cpp:13:38: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   13 |         if(press('A') != 0)(s += 'A';c3 = 'B';)
      |                                      ^~
combo.cpp:13:47: error: expected primary-expression before ')' token
   13 |         if(press('A') != 0)(s += 'A';c3 = 'B';)
      |                                               ^
combo.cpp:16:23: error: 'n' was not declared in this scope
   16 |     for(int i = 0;i < n - 1; i++){
      |                       ^