Submission #984502

#	Time	Username	Problem	Language	Result	Execution time	Memory
984502		Acanikolic	Global Warming (CEOI18_glo)	C++14	28 / 100	2050 ms	5336 KiB

glo

#include <bits/stdc++.h>

#define int long long

#define pb push_back

#define F first

#define S second

const int N = 500 + 10;

const int inf = 2e9;

const int mod = 998244353;

using namespace std;

int lis(vector<int>v) {
	vector<int>ans;
	for(int i = 0; i < v.size(); i++) {
		if(ans.empty() || ans.back() < v[i]) {
			ans.pb(v[i]);
		}else {
			int lb = lower_bound(ans.begin(),ans.end(),v[i]) - ans.begin();
			ans[lb] = v[i];
		}
	}
	return (int)ans.size();
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

	int n,x,res = 0;
	cin >> n >> x;
	vector<int>a(n);
	for(int i = 0; i < n; i++) cin >> a[i];
	res = lis(a);
	for(int i = 0; i < n; i++) {
		a[i] -= x;
		res = max(res,lis(a));
	}
	cout << res;
    return 0;
}

Compilation message (stderr)

glo.cpp: In function 'long long int lis(std::vector<long long int>)':
glo.cpp:21:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(int i = 0; i < v.size(); i++) {
      |                 ~~^~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25