Submission #298306

#	Time	Username	Problem	Language	Result	Execution time	Memory
298306		Hemimor	Robots (IOI13_robots)	C++14	100 / 100	2601 ms	38168 KiB

robots

#include "robots.h"
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <numeric>
#include <cassert>
#include <vector>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

vip a,b;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
	sort(X,X+A);
	sort(Y,Y+B);
	int n=T,mx=(A==0?0:X[A-1]),my=(B==0?0:Y[B-1]);
	a=b=vip(n);
	for(int i=0;i<n;i++){
		if(W[i]>=mx&&S[i]>=my) return -1;
		a[i]={W[i],{S[i],i}};
		b[i]={S[i],{W[i],i}};
	}
	sort(a.begin(),a.end());
	sort(b.begin(),b.end());
	auto f=[&](int m){
		priority_queue<P> q;
		vi c(n);
		int I=0,t=0;
		for(int i=0;i<A;i++){
			while(I<n&&a[I].first<X[i]) q.push(a[I++].second);
			for(int j=0;j<m&&!q.empty();j++){
				P p=q.top();
				q.pop();
				c[p.second]++;
			}
		}
		I=0;
		for(int i=0;i<B;i++){
			while(I<n&&b[I].first<Y[i]){
				if(!c[b[I].second.second]) t++;
				I++;
			}
			t=max(0,t-m);
		}
		while(I<n){
			if(!c[b[I++].second.second]) return 0;
		}
		if(t==0) return 1;
		return 0;
	};
	int l=0,r=n;
	while(r-l>1){
		int m=(l+r)/2;
		if(f(m)) r=m;
		else l=m;
	}
	return r;
}

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