Submission #1230802

#	Time	Username	Problem	Language	Result	Execution time	Memory
1230802		AndreasK	Handcrafted Gift (IOI20_gift)	C++20	Compilation error	0 ms	0 KiB

gift

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

#define designed ios_base::sync_with_stdio(0);
#define by cin.tie(0);
#define AndreasK cout.tie(0);
//#define int long long
#define akinput freopen("akinput.txt", "r", stdin);
#define akoutput freopen("akoutput.txt", "w", stdout);

int construct(int n, int r, int a[], int b[], int x[]) {
    if (x[0] == 1)
        craft(string(n, 'R'));
    else {
        string s = "";
        for (int c = 0; c < n; c++)
            if (c % 2 == 0)
                s += 'R';
            else
                s += 'B';
        craft(s);
    }
    return 1;
}

Compilation message (stderr)

gift.cpp: In function 'int construct(int, int, int*, int*, int*)':
gift.cpp:14:15: error: cannot bind non-const lvalue reference of type 'std::string&' {aka 'std::__cxx11::basic_string<char>&'} to an rvalue of type 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   14 |         craft(string(n, 'R'));
      |               ^~~~~~~~~~~~~~
In file included from gift.cpp:2:
gift.h:5:25: note:   initializing argument 1 of 'void craft(std::string&)'
    5 | void craft(std::string &s);
      |            ~~~~~~~~~~~~~^