Submission #1095562

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095562		Aviansh	선물상자 (IOI15_boxes)	C++17	20 / 100	1 ms	604 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"

using namespace std;

long long delivery(int n, int k, int l, int b[]) {
    float split = (float)l/2;
    int lrem = 0;
    int lasleft = *(upper_bound(b,b+n,split)-1);
    int lasright = l-*upper_bound(b,b+n,split);
    priority_queue<int, vector<int>, greater<int>>pq;
    map<int,int>mp;
    for(int i = 0;i<n;i++){
        mp[b[i]]++;
    }
    for(pair<int,int>p:mp){
        if(p.first>split){
            break;
        }
        for(int i = 0;i<p.second/k;i++){
            pq.push(p.first);
            //cout << "pushing1: " << p.first << "\n";
        }
        lrem+=p.second%k;
        if(lrem>=k){
            pq.push(p.first);
            //cout << "pushing2: " << p.first << "\n";
            lrem%=k;
        }
    }
    int rrem = 0;
    for(map<int,int>::iterator it = (--mp.end());it!=mp.begin();it--){
        pair<int,int>p = *it;
        if(p.first<=split){
            break;
        }
        for(int i = 0;i<p.second/k;i++){
            pq.push(l-p.first);
            //cout << "pushing3: " << l-p.first << "\n";
        }
        rrem+=p.second%k;
        if(rrem>=k){
            pq.push(l-p.first);
            //cout << "pushing4: " << l-p.first << "\n";
            rrem%=k;
        }
    }
    long long ans = 0;
    while(!pq.empty()){
        int tp = pq.top();
        //cout << "popped: " << tp << "\n";
        pq.pop();
        ans+=tp*2;
    }
    //cout << "ans rn: " << ans << "\n";
    if(lrem||rrem){
        if(lrem==0){
            ans+=2*lasright;
        }
        else if(rrem == 0){
            ans+=2*lasleft;
        }
        else if(lrem+rrem<=k){
            ans+=min(1LL*l,1LL*2*lasleft+1LL*2*lasright);
        }
        else{
            ans+=1LL*2*lasleft+1LL*2*lasright;
        }
    }
    //cout << "ans after add: " << ans << "\n";
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:17:14: warning: conversion from 'int' to 'float' may change value [-Wconversion]
   17 |         if(p.first>split){
      |            ~~^~~~~
boxes.cpp:34:14: warning: conversion from 'int' to 'float' may change value [-Wconversion]
   34 |         if(p.first<=split){
      |            ~~^~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30