Submission #1229082

#	Time	Username	Problem	Language	Result	Execution time	Memory
1229082		Hduong	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	17 ms	4032 KiB

triusis

#include <bits/stdc++.h>
#define task "task"

using namespace std;
const long long INF = 1e18;
const int N = 2e5 + 5;
long long n, m, a[N];

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);

  if (fopen (task".inp", "r")) {
    freopen (task".inp", "r", stdin);
    freopen (task".out", "w", stdout);
  }

  cin >> n >> m;
  for (int i = 1; i <= n; i++) cin >> a[i], a[i] = m*i - a[i];
  vector <long long> v;
  long long res = n;
  for (int i = 1; i <= n; i++) {
    if (a[i] < 0) continue ;
    auto it = upper_bound(v.begin(), v.end(), a[i]);
    if (it == v.end()) {
      v.push_back(a[i]);
    }
    else {
      *it = a[i];
    }
  }
  cout << res - v.size();
}

Compilation message (stderr)

triusis.cpp: In function 'int main()':
triusis.cpp:14:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen (task".inp", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:15:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen (task".out", "w", stdout);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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