Submission #965342

#	Time	Username	Problem	Language	Result	Execution time	Memory
965342		Syrius	Arranging Shoes (IOI19_shoes)	C++14	0 / 100	1 ms	344 KiB

shoes

#include <bits/stdc++.h>
using namespace std;

// #define int long long
#define ll long long
#define ff first
#define ss second
#define pint pair < int , int >
#define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL)

const int inf = 1e9 + 9;
const int mxn = 2e5 + 2;
const int mod = 1e9 + 7;

int count_swaps(vector < int > v) {

	cout << (v.size() - 1) * v.size() / 2 << '\n';
}

Compilation message (stderr)

shoes.cpp: In function 'int count_swaps(std::vector<int>)':
shoes.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
   18 | }
      | ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15