Submission #726073

#	Time	Username	Problem	Language	Result	Execution time	Memory
726073		Black_Hawk	Reversing a Sequence (IOI16_reverse)	C++17	Compilation error	0 ms	0 KiB

reverse

#include "grader.cpp"

using namespace std;

std::vector<long long> reverse(std::vector<long long> a)
{
    for (int i = 0; i < a.size()/2; i++)
    {
        long long temp = a[i];
        a[i] = a[a.size()-i-1];
        a[a.size()-i-1] = temp;
    }
    
    return a;
}

Compilation message (stderr)

reverse.cpp: In function 'std::vector<long long int> reverse(std::vector<long long int>)':
reverse.cpp:7:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for (int i = 0; i < a.size()/2; i++)
      |                     ~~^~~~~~~~~~~~
/usr/bin/ld: /tmp/cc2pa6zK.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccJWoQAO.o:reverse.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status