Submission #414652

#	Time	Username	Problem	Language	Result	Execution time	Memory
414652		hibye1217	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1080 ms	3112 KiB

shoes

#ifndef NOTSUBMIT
#include "shoes.h"
using namespace std;
#endif

int psh(std::vector<int>& s, int st, int ed){
	int res = 0;
	for (int j = st; j > ed; j--){
		swap(s[j], s[j-1]);
		res += 1;
	}
	return res;
}

long long count_swaps(std::vector<int> s) {
	int n = s.size();
	int ans = 0;
	for (int i = 0; i < n; i += 2){
		int p = 0;
		for (int j = i; j < n; j++){
			if (s[j] == -s[i]){ p = j; break; }
		}
		ans += psh(s, p, i+1);
		if (s[i] > s[i+1]){ swap(s[i], s[i+1]); ans += 1; }
	}
	return ans;
}

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