Submission #753290

#	Time	Username	Problem	Language	Result	Execution time	Memory
753290		vjudge1	Arcade (NOI20_arcade)	C++98	100 / 100	423 ms	24448 KiB

Arcade

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll maxn=5e5+7;
ll n, m, t[maxn], a[maxn];
vector <pair <ll, ll>> grid(maxn);
int main(){
	cin >> n >> m;
	for(int i=0; i<m; i++){
		cin >> t[i];
	}
	for(int i=0; i<m; i++){
		cin >> a[i];
	}
	for(int i=0; i<m; i++){
		grid[i]=make_pair(a[i]+t[i], t[i]-a[i]);
	}
	sort(grid.rbegin(), grid.rend());
	vector <ll> dp;
	for (int i = 0; i < m; ++i){
		ll idx = lower_bound(dp.begin(), dp.end(), grid[i].second)-dp.begin();
		if(idx==dp.size()) dp.push_back(grid[i].second);
		else dp[idx]=grid[i].second;
	}
	cout << dp.size() << endl;
	return 0;
}

Compilation message (stderr)

Arcade.cpp: In function 'int main()':
Arcade.cpp:22:9: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   if(idx==dp.size()) dp.push_back(grid[i].second);
      |      ~~~^~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 20 / 20
• Subtask 7: 15 / 15