Submission #1057715

#	Time	Username	Problem	Language	Result	Execution time	Memory
1057715		MuhammadSaram	Teams (IOI15_teams)	C++17	0 / 100	2086 ms	104076 KiB

teams

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

using namespace std;
 
const int M = 5e5 + 1;
 
#define all(v) v.begin(), v.end()
 
int n,pre[M];
vector<int> V,seg[M*2];
 
void make(int v=0,int s=0,int e=n)
{
	for (int i=s;i<e;i++)
		seg[v].push_back(V[i]);
	sort(all(seg[v]));
	if (s+1==e)
		return;
	int mid=(s+e)/2,lc=v+1,rc=v+(mid-s)*2;
	make(lc,s,mid);
	make(rc,mid,e);
}
 
int get(int l,int r,int x,int v=0,int s=0,int e=n)
{
	if (l>=e or r<=s)
		return 0;
	if (l<=s && e<=r)
	{
		int y=upper_bound(all(seg[v]),x)-begin(seg[v]);
		return y;
	}
	int mid=(s+e)/2,lc=v+1,rc=v+(mid-s)*2;
	return get(l,r,x,lc,s,mid)+get(l,r,x,rc,mid,e);
}
 
void init(int N,int A[],int B[])
{
	n=N;
	vector<pair<int,int>> v1;
	for (int i=0;i<n;i++)
		v1.push_back({B[i],A[i]}),pre[B[i]]++;
	sort(v1.begin(),v1.end());
	for (auto i:v1)
		V.push_back(i.second);
	for (int i=1;i<M;i++)
		pre[i]+=pre[i-1];
	make();
}
 
int can(int m,int k[])
{
	sort(k,k+m);
	reverse(k,k+m);
	int val=n;
	for (int i=0;i<m;i++)
	{
		int s=pre[k[i]-1]-1,e=val;
		while (s+1<e)
		{
			int mid=(s+e)/2;
			if (get(mid,val,k[i])>=k[i])
				s=mid;
			else
				e=mid;
		}
		if (s==pre[k[i]-1]-1)
			return 0;
		val=s;
	}
	return 1;
}

Compilation message (stderr)

teams.cpp: In function 'int get(int, int, int, int, int, int)':
teams.cpp:31:35: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   31 |   int y=upper_bound(all(seg[v]),x)-begin(seg[v]);
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23