Submission #731333

#	Time	Username	Problem	Language	Result	Execution time	Memory
731333		dubabuba	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	106 ms	5332 KiB

triusis

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

const int mxn = 2e5 + 10;
int a[mxn], n, m;
vector<int> sus;

int LIS() {
	vector<int> dp;
	for(int x : sus) {
		int i = upper_bound(dp.begin(), dp.end(), x) - dp.begin();
		if(i == dp.size()) dp.push_back(x);
		else dp[i] = x;
	}
	return dp.size();
}

int main() {
	cin >> n >> m;
	for(int i = 1; i <= n; i++) {
		cin >> a[i];

		if(m * i - a[i] >= 0)
			sus.push_back(m * i - a[i]);
	}

	cout << n - LIS();
	return 0;
}

Compilation message (stderr)

triusis.cpp: In function 'int LIS()':
triusis.cpp:12:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   if(i == dp.size()) dp.push_back(x);
      |      ~~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37