Submission #766220

#	Time	Username	Problem	Language	Result	Execution time	Memory
766220		Ludissey	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	212 KiB

shoes

#include "shoes.h"
#include <iostream>
#include <string>
#include <set>
#include <map>
#include <cstring>
#include <unordered_map>
#include <vector>
#include <fstream>
#include <bitset>
#include <tuple>
#include <cmath>
#include <cstdint>
#include <stack>
#include <cassert>
#include <cstdio>
#include <queue>
#include <iterator>
#include <iomanip>
#include <algorithm>
#include <sstream> 

#define INF  9223372036854775801
#define int long long
#define double long double

#define MOD(a) ((a) % 1000000007  + 1000000007 ) % 1000000007
#define FI first
#define caseOut(t) cout << "Case " << t << ": "; 
#define SE second
#define USACO_SETUP() ifstream cin("paint.in"); ofstream cout("paint.out");
#define SETUP() ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using namespace std;

long long count_swaps(std::vector<signed> s) {
	int n = s.size();
	int sum = 0;
	int i = 0;
	int c = 0;
	while(i<n&&c<2000)
	{
		c++;
		int l = i - 1, r = i + 1;
		int indx = 0;
		while (l >= 0 || r < n) {
			if (l >= 0 && s[l] == -s[i]) {
				indx = l;
				break;
			}
			else if (r < n && s[r] == -s[i]) {
				indx = r;
				break;
			}
			l--;
			r++;
		}
		int targ = (indx / 2) * 2;
		if (s[i] % 2 != 0) targ++;
		int ad = 1;
		if (i < indx) {
			for (int v = i; v < n-1; v++)
			{
				if (v < n - 1 && s[v]<0 && v % 2 == 0 && s[v + 1] == -s[v]) break;
				else if (v > 0 && v % 2 != 0 && s[v-1] == -s[v]) break;
				sum++;
				swap(s[v], s[v + 1]);
				ad = 0;
			}
		}
		else {
			for (int v = i; v > 0; v--)
			{
				if (v < n - 1 && s[v] < 0 && v % 2 == 0 && s[v + 1] == -s[v]) break;
				else if (v > 0 && v % 2 != 0 && s[v - 1] == -s[v]) break;
				sum++;
				swap(s[v], s[v - 1]);
			}
		}
		i += ad;
	}
	return sum;
}

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