Submission #1196435

#	Time	Username	Problem	Language	Result	Execution time	Memory
1196435		ffeyyaae_	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"

using namespace std;

string guess_sequence( int N )
{
    int N; cin >> N;
    string s = "";
    string a = "ABXY";
    vector<char> bt;
    if( press("A") > 0 ) s += "A";
    else if( press("B") > 0 ) s += "B";
    else if( press("X") > 0 ) s += "X";
    else s += "Y";
    if( N == 1 ) return s;
    for( auto c : a ) if( s[0] != c ) bt.push_back( c );
    for( int i=1;i<N;i++ )
    {
        string tp = s+bt[0] + s+bt[1]+bt[0] + s+bt[1]+bt[1] + s+bt[1]+bt[2];
        int sz = sizeof(s);
        assert( sz < N*4 );
        if( press(tp) == sz+1 ) s += bt[0];
        else if( press(tp) == sz+2 ) s += bt[1];
        else s += bt[2];
    }
    if( press(s+bt[0]) == N ) s += bt[0];
    else if( press(s+bt[1]) == N ) s += bt[1];
    else s += bt[2];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:8:9: error: declaration of 'int N' shadows a parameter
    8 |     int N; cin >> N;
      |         ^
combo.cpp:6:28: note: 'int N' previously declared here
    6 | string guess_sequence( int N )
      |                        ~~~~^