Submission #684103

#	Time	Username	Problem	Language	Result	Execution time	Memory
684103		Khizri	Robots (IOI13_robots)	C++17	100 / 100	1507 ms	24724 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
#define endl "\n"
const int mxn=1e6+5;
int n,a,b;
vector<int>l,r;
vector<pii>arr;
bool check(int k){
    priority_queue<int>q;
    int idx=0;
    for(int i=0;i<a;i++){
        while(idx<n&&arr[idx].F<l[i]){
            q.push(arr[idx].S);
            idx++;
        }
        int say=min(k,(int)q.size());
        while(say--){
            q.pop();
        }
    }
    while(idx<n){
        q.push(arr[idx].S);
        idx++;
    }
    for(int i=0;i<b;i++){
        int say=min((int)q.size(),k);
        while(say--){
            if(q.top()<r[i]){
                q.pop();
            }
            else{
                return false;
            }
        }
    }
    if(q.size()) return false;
    return true;
}
int putaway(int A, int B, int N, int X[], int Y[], int W[], int S[]) {
    n=N;
    a=A;
    b=B;
    for(int i=0;i<a;i++){
        l.pb(X[i]);
    }
    for(int i=0;i<b;i++){
        r.pb(Y[i]);
    }
    for(int i=0;i<n;i++){
        arr.pb({W[i],S[i]});
    }
    sort(all(l));
    sort(rall(r));
    sort(all(arr));
    int l=1,rr=n+1;
    while(l<=rr){
        int m=(l+rr)/2;
        if(check(m)){
            rr=m-1;
        }
        else{
            l=m+1;
        }
    }
    rr++;
    if(rr>n){
        return -1;
    }
    else{
        return rr;
    }
}

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