Submission #974508

#	Time	Username	Problem	Language	Result	Execution time	Memory
974508		rahidilbayramli	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	77 ms	134996 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define all(v) v.begin(), v.end()
#define pb push_back
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<pll, null_type, less<pll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const ll sz = 1e5+5;
stack<ll> st1[sz], st2[sz];
long long count_swaps(vector<int> s) {
	ll ans = 0, i;
	for(i = 0; i < s.size(); i++)
    {
        if(s[i] > 0)
        {
            if(st1[s[i]].size() == 0)
                st2[s[i]].push(i);
            else
            {
                ll f = st1[s[i]].top();
                st1[s[i]].pop();
                ans += (i - f - 1);
            }
        }
        else
        {
            if(st2[-s[i]].size() == 0)
                st1[-s[i]].push(i);
            else
            {
                ll f = st2[-s[i]].top();
                st2[-s[i]].pop();
                ans += (i - f);
            }
        }
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:22:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(i = 0; i < s.size(); i++)
      |             ~~^~~~~~~~~~

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