Submission #428381

#	Time	Username	Problem	Language	Result	Execution time	Memory
428381		SAAD	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#define F first
#define S second
#define rep(i,a,b) for(int i=a;!(a==b&&i!=b)&&((i<=b&&b>=a)||(i>=b&&a>=b));i+=(a<=b?1:-1))
#define pb push_back
#define Fbitl __builtin_ffs
#define bit1 __builtin_popcount
//#include <bits/stdc++.h>
#include <iostream>
#include <math.h>
#include <algorithm>
#include <string.h>
#include <vector>
#include <queue>
#include <map>
#include <unordered_map>
//#include "friend.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<string, string> pss;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<vl> vvl;
//press(string);
string sw = " ABXY" ;
int fidx ;
string guess_sequence(int N) {
    if ( press("ABA") ) {
        if ( press("B") ) fidx = 2 ;
        else fidx = 1 ;
    }
    else {
         if ( press("X") ) fidx = 3 ;
        else fidx = 4 ;
    }
    string res = { sw[fidx] } , t ;
    if ( N == 1 ) return sw[fidx] ;
    for (int j = 1;j<n;j++) {
        t += ' ';
        for ( int i = 1 ; i <= 4 ; i++ ) {
            if ( i == fidx ) continue;
            if ( i == 4 || (i == 3&&fidx==4)) {
                res += sw[i];
                break;
            }
            t[j] = sw[i];
            if ( press(t) == j+1 ) {
                res += sw[i];
                break;
            }
        }
    }
    return res;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:31:10: error: 'press' was not declared in this scope; did you mean 'pss'?
   31 |     if ( press("ABA") ) {
      |          ^~~~~
      |          pss
combo.cpp:40:33: error: could not convert 'sw.std::__cxx11::basic_string<char>::operator[](((std::__cxx11::basic_string<char>::size_type)fidx))' from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   40 |     if ( N == 1 ) return sw[fidx] ;
      |                                 ^
      |                                 |
      |                                 __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
combo.cpp:41:22: error: 'n' was not declared in this scope
   41 |     for (int j = 1;j<n;j++) {
      |                      ^
combo.cpp:50:18: error: 'press' was not declared in this scope; did you mean 'res'?
   50 |             if ( press(t) == j+1 ) {
      |                  ^~~~~
      |                  res