Submission #433138

#	Time	Username	Problem	Language	Result	Execution time	Memory
433138		jli12345	Rabbit Carrot (LMIO19_triusis)	C++11	100 / 100	37 ms	4168 KiB

triusis

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

void fastIO(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
}

int N, M;
int arr[200100];

int main(){
    fastIO();
    cin >> N >> M;
    for (int i = 1; i <= N; i++){
        cin >> arr[i];
        arr[i] -= M*i;
        arr[i] = -arr[i];
    }
    vector<int> v;
    for (int i = 0; i <= N; i++){
        if (arr[i] < 0)
            continue;
        int pos = upper_bound(v.begin(), v.end(), arr[i])-v.begin();
        if (pos == v.size()){
            v.push_back(arr[i]);
        } else {
            v[pos] = arr[i];
        }
    }
    cout << N+1-v.size() << "\n";
}

Compilation message (stderr)

triusis.cpp: In function 'int main()':
triusis.cpp:25:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         if (pos == v.size()){
      |             ~~~~^~~~~~~~~~~

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