Submission #419011

#	Time	Username	Problem	Language	Result	Execution time	Memory
419011		EncryptingWolf	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	27 ms	1836 KiB

shoes

#include <vector>
using namespace std;
typedef long long ll;
#define FOR(i,x,y) for (ll i = x; i <y; i++)

ll count_swaps(vector<int> S)
{
	ll count = 0;
	FOR(i, 0, S.size()/2)
	{
		count += i;
	}
	return count;
}

Compilation message (stderr)

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:4:37: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define FOR(i,x,y) for (ll i = x; i <y; i++)
......
    9 |  FOR(i, 0, S.size()/2)
      |      ~~~~~~~~~~~~~~~~                
shoes.cpp:9:2: note: in expansion of macro 'FOR'
    9 |  FOR(i, 0, S.size()/2)
      |  ^~~

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