Submission #584560

#	Time	Username	Problem	Language	Result	Execution time	Memory
584560		BhavayGoyal	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	27 ms	5284 KiB

triusis

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

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class T> using oset = 
            tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define ll long long
#define ld long double
#define ar array
#define vi vector<int>
#define vii vector<vector<int>>
#define pii pair<int, int>
#define pb push_back
#define all(x) x.begin(), x.end()
#define f first
#define s second

const int MOD = 1e9+7;
const int inf = 1e9;
const ll linf = 1e18;

const int d4i[4]={-1, 0, 1, 0}, d4j[4]={0, 1, 0, -1};
const int d8i[8]={-1, -1, 0, 1, 1, 1, 0, -1}, d8j[8]={0, 1, 1, 1, 0, -1, -1, -1};


// -------------------------------------------------- Main Code --------------------------------------------------

int lis(vi &arr) {
    vi dp;
    for (int i = 0; i < arr.size(); i++) {
        int x = upper_bound(all(dp), arr[i]) - dp.begin();
        if (x == dp.size()) dp.pb(arr[i]);
        else dp[x] = arr[i];
    }
    return dp.size();
}

void sol() {
    int n, m; cin >> n >> m;
    int arr[n];
    for (int i = 0; i < n; i++) cin >> arr[i];
    vi a;
    for (int i = 1; i <= n; i++) {
        if (m*i - arr[i-1] >= 0) {
            a.pb(m*i - arr[i-1]);
        }
    }
    cout << n-lis(a) << endl;
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t = 1;
    // cin >> t; 
    while (t--) {
        sol();
    }
    return 0;
}

Compilation message (stderr)

triusis.cpp: In function 'int lis(std::vector<int>&)':
triusis.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (int i = 0; i < arr.size(); i++) {
      |                     ~~^~~~~~~~~~~~
triusis.cpp:36:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         if (x == dp.size()) dp.pb(arr[i]);
      |             ~~^~~~~~~~~~~~

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