Submission #1104866

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104866		monaxia	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
#define pb push_back
#define ppb pop_back
#define fr first
#define sc second
#define all(v) v.begin(), v.end()
#define eps (long long)(1e-9)
using namespace std;
 
using ll = long long;
using ull = unsigned long long;
using ld = long double;

const ll Mod = 1e9 + 7;

string guess_sequence(int n){
    string ans = "", temp = "ABXY";
    int cnt = 0;

    while(cnt != n){
        for(auto& x : temp){
            ans.pb(x);
            if(press(ans) > cnt){
                cnt ++;
                break;
            }

            ans.ppb();
        }
    }

    return ans;
}   

signed main()
{
    cin.tie(0)->sync_with_stdio(0);
 
    if(fopen("blank.inp", "r")){
        freopen("blank.inp", "r", stdin);
        freopen("blank.out", "w", stdout);
    }
    
    // cout << 1; return 0;

    ll n = 1;

    // cin >> n;

    // while(n) {
    //     solve();
    //     n --;
    //     cout << "\n";
    // }
 
    // cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
}

Compilation message (stderr)

combo.cpp: In function 'int main()':
combo.cpp:47:8: warning: unused variable 'n' [-Wunused-variable]
   47 |     ll n = 1;
      |        ^
combo.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen("blank.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
combo.cpp:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen("blank.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccxpbQxU.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc5OCpSV.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status