제출 #1228890

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1228890		Tony_Tung	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	16 ms	4548 KiB

triusis

#include <bits/stdc++.h>
#define task ""
#define ll long long
using namespace std;

const int N = 2e5 + 5;
ll a[N], b[N];
vector<int> res;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    if (fopen(task".inp", "r"))
    {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }

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

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

triusis.cpp: In function 'int main()':
triusis.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:17:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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