Submission #68302

#	Time	Username	Problem	Language	Result	Execution time	Memory
68302		MKopchev	Robots (IOI13_robots)	C++14	100 / 100	2363 ms	22876 KiB

robots

#include<bits/stdc++.h>
#include "robots.h"
using namespace std;
const int nmax=1e6+42;
vector< pair<int/*weight*/,int/*size*/> > robots;
vector<int> SIZES;
priority_queue<int> q,emp;
bool can(int t)
{
    q=emp;
    for(auto k:robots)
        if(k.second!=-1)q.push(k.second);
        else
        {
            int rem=q.size();
            if(rem>t)rem=t;
            for(int j=1;j<=rem;j++)
                q.pop();
        }
    if(q.size()==0)return 1;
    for(auto k:SIZES)
    {
        if(q.top()>k)return 0;
        if(q.size()<=t)return 1;
        for(int j=1;j<=t;j++)
            q.pop();
    }
    return 0;
}
bool cmp(pair<int/*weight*/,int/*size*/> a,pair<int/*weight*/,int/*size*/> b)
{
    if(a.first!=b.first)return a.first<b.first;
    return a.second>b.second;
}
int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[])
{
    for(int i=0;i<A;i++)X[i]--;
    for(int i=0;i<B;i++)Y[i]--;
    for(int i=0;i<T;i++)robots.push_back({W[i],S[i]});
    for(int i=0;i<A;i++)robots.push_back({X[i],-1});
    sort(robots.begin(),robots.end(),cmp);
    sort(Y,Y+B);
    reverse(Y,Y+B);
    for(int j=0;j<B;j++)SIZES.push_back(Y[j]);

    int ok=T+1,not_ok=-1;
    while(ok-not_ok>1)
    {
        int av=(ok+not_ok)/2;
        if(can(av))ok=av;
        else not_ok=av;
    }
    if(not_ok==T)return -1;
    return ok;
}
/*
const int A=3,B=2,T=10;
int X[A]={6,2,9};
int Y[B]={4,7};
int W[T]={4,8,2,7,1,5,3,8,7,10};
int S[T]={6,5,3,9,8,1,3,7,6,5};
int main()
{
cout<<putaway(A,B,T,X,Y,W,S)<<endl;
}
*/

Compilation message (stderr)

robots.cpp: In function 'bool can(int)':
robots.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(q.size()<=t)return 1;
            ~~~~~~~~^~~

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