Submission #1197062

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197062		nvc2k8	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
#define TASK "task"
#define INT_LIM (int) 2147483647
#define LL_LIM (long long) 9223372036854775807
#define endl '\n'
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define BIT(i,x) (((i)>>(x))&1)
#define FOR(i,a,b) for(int i = (a); i<=(b); i++)
#define FORD(i,a,b) for(int i = (a); i>=(b); i--)
#define ll long long
#define pii pair<int,int>
using namespace std;
///------------------------------------------///

string guess_sequence(int N)
{
    string ret = "";
    vector<char> digit = {'A', 'B', 'X', 'Y'};

    if (N==3)
    {
        FOR(i, 1, 3)
        {
            for (auto d:digit)
            {
                ret+= d;
                if (press(ret)==i) break;
                ret.pop_back();
            }
        }
        return ret;
    }

    return ret;
}

signed main()
{
    ///--------------------------///
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    if (fopen(TASK".INP","r")!=NULL)
    {
        freopen(TASK".INP","r",stdin);
        freopen(TASK".OUT","w",stdout);
    }
    ///--------------------------///

    int NTEST = 1;
    //cin >> NTEST;

    return 0;
}

///------------------------------------------///

Compilation message (stderr)

combo.cpp: In function 'int main()':
combo.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen(TASK".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
combo.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen(TASK".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccwy9gHy.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cczPXbN2.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status