Submission #684888

#	Time	Username	Problem	Language	Result	Execution time	Memory
684888		thegamercoder19	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	300 KiB

shoes

#include "shoes.h"

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>

#define M_PI       3.14159265358979323846
#define FILER 0
using ll = long long;
using ull = unsigned long long;
using ld = long double;
const ll MOD = pow(10, 9) + 7;
const ll INFL = 0x3f3f3f3f3f3f3f3f;
const ull INFUL = 0x3f3f3f3f3f3f3f3f;
const ll INFT = 0x3f3f3f3f;
const ull MAX = 1LL << 24;
const ll MODD = 998244353;
const double EPS = 1e-10;
#define V vector
#define pll pair<ll, ll>
#define pull2 pair<ull,ull>
#define MS multiset
#define M map
#define Q queue
#define PQ priority_queue
#define IOF ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c)
#define FORR(typ,i,a,b,c) for(typ i = a; i > b; i -= c)
#define FORA(a,i) for(auto &i : a)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define sorta(a) sort(all(a))
#define sortd(a) sort(all(a), greater<ll>())
#define setp(x) setprecision(x)<<fixed
#define RET return
#define log(a,b) log(b)/log(a)
#define WH(s) while(s)
#define WHI(t) WH(t--)
#define YES cout<<"YES"<<endl;
#define NO cout<<"NO"<<endl;
#define Yes cout<<"Yes"<<endl;
#define No cout<<"No"<<endl;
#define YESNO(s) cout << (s ? "YES" : "NO") << endl;
#define YesNo(s) cout<<(s?"Yes":"No")<<endl;
#define TYP 0
using namespace std;
map<ll, set<ll>> h;
map<ll, bool> d;
long long count_swaps(std::vector<int> s) {
	
	ll n = s.size(), res=0;
	FOR(ll, i, 0, n, 1)h[s[i]].insert(i);
	FOR(ll, i, 0, s.size()-1, 1)
	{
		if (d[i])continue;
		if (s[i] == -s[i + 1] && s[i] < 0)
		{
			h[s[i]].erase(i); h[-s[i]].erase(i + 1);
			//s.erase(s.begin() + i); s.erase(s.begin() + i);
			d[i] = d[i + 1] = 1;
			//i++;
		}
		else 
		{
			if (!h[-s[i]].size())continue;
			ll j = *h[-s[i]].upper_bound(i);
			res += j - i;
			h[-s[i]].erase(j); h[s[i]].erase(i);
			d[i] = d[j] = 1;
			//swap()

		}
	}

	return res;

}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:26:43: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 | #define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c)
......
   52 |  FOR(ll, i, 0, s.size()-1, 1)
      |          ~~~~~~~~~~~~~~~~                  
shoes.cpp:52:2: note: in expansion of macro 'FOR'
   52 |  FOR(ll, i, 0, s.size()-1, 1)
      |  ^~~

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