Submission #144720

#	Time	Username	Problem	Language	Result	Execution time	Memory
144720		monus1042	Arranging Shoes (IOI19_shoes)	C++17	25 / 100	33 ms	1912 KiB

shoes

#include "shoes.h"

long long count_swaps(std::vector<int> s) {
	if (s.size()==2){
		if (s[0]<0) return 0;
		else return 1;
	}else{
		long long x=s.size()/2 ;
		return x*(x-1)/2;
	}
}

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