Submission #1099263

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099263		DangKhoizzzz	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	22 ms	8400 KiB

triusis

#include <bits/stdc++.h>
#define int long long

using namespace std;


const int maxn = 2e5 + 7;

int n , m , a[maxn] ;

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

    vector <int> b;

    for(int i = 1; i <= n; i++)
    {
        if(a[i] <= m*i)
        {
            b.push_back(a[i] - m*i);
        }
    }

    reverse(b.begin() , b.end());

    vector <int> LIS;

    for(int i = 0; i < b.size(); i++)
    {
        int j = upper_bound(LIS.begin() , LIS.end() , b[i]) - LIS.begin();

        if(j == LIS.size())
        {
            LIS.push_back(b[i]);
        }
        else LIS[j] = b[i];
    }

    cout << n - LIS.size() << '\n';
}


signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    solve();
    return 0;
}

Compilation message (stderr)

triusis.cpp: In function 'void solve()':
triusis.cpp:30:22: 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]
   30 |     for(int i = 0; i < b.size(); i++)
      |                    ~~^~~~~~~~~~
triusis.cpp:34:14: 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]
   34 |         if(j == LIS.size())
      |            ~~^~~~~~~~~~~~~

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