Submission #729956

#	Time	Username	Problem	Language	Result	Execution time	Memory
729956		Rasoul006	Robots (IOI13_robots)	C++17	76 / 100	834 ms	65536 KiB

robots

#include "robots.h"

#include <bits/stdc++.h>

#define endl "\n"

#define F first

#define S second

#define pb push_back

#define all(x) x.begin() , x.end()

#define mm(dp , val) memset (dp , val , sizeof dp)

#define mid ((r+l)>>1)

#define lx (n<<1)

#define rx ((n<<1)|1)

typedef long long ll;

using namespace std;

const int logn = 26 ;

const int N = 1e6+5;

ll n , m , q , x[N] , y[N] , s[N] , w[N] ;

multiset <pair<ll , ll>> st1 , st2 ;

vector <pair <ll , bool>> vec ;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {

    n = A , m = B , q = T ;

    for (int i = 0 ; i<n ; i++)
    {
        x[i] = X[i] ;
        vec.pb({x[i] , 0}) ;
    }

    for (int i = 0 ; i<m ; i++)
    {
        y[i] = Y[i] ;
        vec.pb({y[i] , 1}) ;
    }

    for (int i = 0 ; i<q ; i++)
    {
        w[i] = W[i] , s[i] = S[i] ;
        st1.insert({w[i] , s[i]}) ;
        st2.insert({s[i] , w[i]}) ;
    }

    sort (all(vec)) ;

    sort (y , y+m) ;
    sort (x , x+n) ;

    for (int i = 0 ; i<q ; i++)
    {
        if (w[i] < x[n-1] || s[i] < y[m-1]) continue ;

        return -1 ;
    }

    ll ans = 0 ;

    while (!st1.empty() && ans <= q)
    {

        for (auto i : vec)
        {
            ll x = i.F ; bool ty = i.S ;

            if (ty)
            {
                auto it = st2.lower_bound({x , 0}) ;

                if (it == st2.begin())
                    continue ;
                    
                it--;
                pair <ll,ll> pr = *it ;
                st2.erase(it) ;
                auto it2 = st1.lower_bound({pr.S , pr.F}) ;
                st1.erase(it2);
            }

            else
            {
                
                auto it = st1.lower_bound({x , 0});
                
                if (it == st1.begin())
                    continue ;

                it--;
                pair <ll,ll> pr = *it ;
                st1.erase(it);
                auto it2 = st2.lower_bound({pr.S , pr.F}) ;
                st2.erase(it2);
            }
        }

        ans++;
    }

    return (ans <= q ? ans : -1) ;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 0 / 10