Submission #520880

#	Time	Username	Problem	Language	Result	Execution time	Memory
520880		Psudora	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	34 ms	12340 KiB

triusis

#include <bits/stdc++.h> 
#include <ext/pb_ds/tree_policy.hpp>
#include<ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;  
template <class T> using Tree = tree<T, null_type, less<T>,rb_tree_tag, tree_order_statistics_node_update>;
typedef tree < pair<int, int>, null_type, less<pair<int, int>>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
bool cmp(pair<int, int>& a, pair<int, int>& b) { return a.second < b.second; }  
#define ll long long 
#define mod 1000000007 
#define mod2 99824435 
const int INF =  (int)1e9;  
 
int add(int i, int j) {
	if ((i += j) >= mod)
		i -= mod;
	return i;
} 
int sub(int i, int j) {
	if ((i -= j) < 0)
		i += mod;
	return i;
} 
const int MAXN = 201010; 
const int N = 3e5+10;  
vector<int>adj[N];
vector<int> st, en;
vector<vector<int>>up;   
const int maxn = 1000;   
int longest_nondec_subseq(const vector<int>& seq) {
	vector<int> mine;
	for (int i : seq) { 
		int pos = std::upper_bound(mine.begin(), mine.end(), i) - mine.begin(); 
		if (pos == mine.size()) {
			mine.push_back(i);
		} else {
			mine[pos] = i;
		}
	}
	return mine.size();
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("herding.in","r",stdin);
    //freopen("herding.out","w",stdout);   
    //set<int, greater<int>>st; 
    //
    int pole_num;
	int jump_height;
	std::cin >> pole_num >> jump_height;
	vector<int> poles(pole_num);
	for (int p = 0; p < pole_num; p++) {
		std::cin >> poles[p];
	}

	vector<int> poss;
	for (int i = 1; i <= pole_num; i++) { 
		if (i * jump_height >= poles[i - 1]) {
			poss.push_back(i * jump_height - poles[i - 1]);
		}
	}
	cout << pole_num - longest_nondec_subseq(poss) << endl;
    return 0;
}

Compilation message (stderr)

triusis.cpp: In function 'int longest_nondec_subseq(const std::vector<int>&)':
triusis.cpp:34:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   if (pos == mine.size()) {
      |       ~~~~^~~~~~~~~~~~~~

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