Submission #465822

#	Time	Username	Problem	Language	Result	Execution time	Memory
465822		MohamedFaresNebili	Handcrafted Gift (IOI20_gift)	C++14	Compilation error	0 ms	0 KiB

gift

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

int construct(int n, int r, std::vector<int> a, std::vector<int> b, std::vector<int> x) {
  	string s=""; char c='R'; bool f=true;
    for(int l=0;l<n;l++) {
      s=s+c;
      if(c=='R') c='B';
      else c='R';
    }
  	for(int l=0;l<r&&f;l++) {
      int x=a[l], y=b[l];
      if(x==y) f=false;
    }
    if(used) { craft(s); return 1; }
    return 0;
}

Compilation message (stderr)

gift.cpp: In function 'int construct(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
gift.cpp:17:8: error: 'used' was not declared in this scope
   17 |     if(used) { craft(s); return 1; }
      |        ^~~~