Submission #765545

#	Time	Username	Problem	Language	Result	Execution time	Memory
765545		Ludissey	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include <iostream>
#include <string>
#include <set>
#include <map>
#include <cstring>
#include <unordered_map>
#include <vector>
#include <fstream>
#include <bitset>
#include <tuple>
#include <cmath>
#include <cstdint>
#include <stack>
#include <cassert>
#include <cstdio>
#include <queue>
#include <iterator>
#include <iomanip>
#include <algorithm>
#include <sstream> 

#define INF  9223372036854775801
#define int long long
#define double long double

#define MOD(a) ((a) % 1000000007  + 1000000007 ) % 1000000007
#define FI first
#define caseOut(t) cout << "Case " << t << ": "; 
#define SE second
#define USACO_SETUP() ifstream cin("paint.in"); ofstream cout("paint.out");
#define SETUP() ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using namespace std;

long long count_swaps(std::vector<int> S) {
    if (a[0] > 0) {
        swap(a[0], a[1]);
        return 1;
    }
    else {
        return 0;
    }
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<long long int>)':
shoes.cpp:35:9: error: 'a' was not declared in this scope
   35 |     if (a[0] > 0) {
      |         ^
shoes.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
   42 | }
      | ^