Submission #1273948

#	Time	Username	Problem	Language	Result	Execution time	Memory
1273948		almaz	Arranging Shoes (IOI19_shoes)	C++20	10 / 100	1 ms	348 KiB

shoes

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

// #define int long long
// #define endl '\n'
#define ff first
#define ss second
#define pb push_back
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ar array

const int MOD = 1e9 + 7, N = 2e5 + 5;

long long INF = 1e18;

long long count_swaps(std::vector<int> s) {
	int n = s.size();
	long long ans = 0;
	vector <int> b;
	for(int i = 0;i < n;i += 2){
		if(s[i] > 0 && s[i + 1] < 0){
			ans++;
		}
		if(s[i] == s[i + 1]){
			int x;
			if(s[i] < 0){
				x = i + 1;
			}
			else{
				x = i;
			}
			b.pb(x);
		}
	}
	
	for(int i = 0;i < (int)b.size();i += 2){
		ans += b[i + 1] - b[i];
	}
	return (ans);
}

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