Submission #1308441

#	Time	Username	Problem	Language	Result	Execution time	Memory
1308441		mxhrvs	XOR Sum (info1cup17_xorsum)	C++20	Compilation error	0 ms	0 KiB

xorsum

#include<bits/stdc++.h>
using namespace std;
int amin(){
    int n;
    cin >> n;
    int a[n+1];
    vector<int> v;
    for(int i = 1; i <= n; i ++){
        cin >> a[i];
    }
    for(int i = 1; i <= n; i ++){
        for(int j = i ; j <= n; j ++){
            v.push_back(a[i] + a[j]);
        }
    }
    int ans = 0;
    for(auto i : v) ans ^= i;

    cout << ans << "\n";
}

Compilation message (stderr)

xorsum.cpp: In function 'int amin()':
xorsum.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type]
   20 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/13/../../../x86_64-linux-gnu/crt1.o: in function `_start':
(.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status