Submission #721004

#	Time	Username	Problem	Language	Result	Execution time	Memory
721004		pcc	Exhibition (JOI19_ho_t2)	C++14	0 / 100	0 ms	212 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define int ll
#define pll pair<ll,ll>
#define fs first
#define sc second
const ll mxn = 1e5+10;

main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	ll n,m;
	cin>>n>>m;
	pll arr[n];
	for(auto &i:arr)cin>>i.fs>>i.sc;
	ll brr[m];
	for(auto &i:arr)i.fs = -i.fs,i.sc = -i.sc;
	for(auto &i:brr)cin>>i;
	for(auto &i:brr)i = -i;
	sort(arr,arr+n);
	sort(brr,brr+m);
	vector<pll> b;
	for(auto &i:brr){
		if(b.empty()||b.back().fs != i)b.push_back({i,1});
		else b.back().sc++;
	}
	vector<ll> lis;
	ll len = 0;
	ll p = 0;
	b.push_back({0,0});
	while(p<n&&arr[p].fs<b[0].fs)p++;
	for(int i = 0;i<b.size()-1;i++){
		auto tmp = b[i];
		len += tmp.sc;
		vector<int> v;
		while(p<n&&arr[p].fs<b[i+1].fs){
			v.push_back(arr[p].sc);
			p++;
		}
		sort(v.begin(),v.end());
		for(auto &j:v){
			auto pos = upper_bound(lis.begin(),lis.end(),j)-lis.begin();
			if(pos == lis.size())lis.push_back(j);
			else lis[pos] = j;
		}
		while(lis.size()>len)lis.pop_back();
		//for(auto &j:lis)cout<<j<<' ';cout<<endl;
	}
	/*
	for(auto &i:b)cout<<i.fs<<' '<<i.sc<<',';cout<<endl;
	for(auto &i:arr)cout<<i.fs<<' '<<i.sc<<',';cout<<endl;
	*/
	cout<<lis.size();
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~
joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:33:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for(int i = 0;i<b.size()-1;i++){
      |                ~^~~~~~~~~~~
joi2019_ho_t2.cpp:44:11: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |    if(pos == lis.size())lis.push_back(j);
      |       ~~~~^~~~~~~~~~~~~
joi2019_ho_t2.cpp:47:19: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   47 |   while(lis.size()>len)lis.pop_back();
      |         ~~~~~~~~~~^~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50