제출 #433403

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
433403		idas	Rabbit Carrot (LMIO19_triusis)	C++11	100 / 100	40 ms	4136 KiB

triusis

#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define SZ(x) ((int)((x).size()))
#define LE(vec) vec[vec.size()-1]
#define TSTS int t; cin >> t; while(t--)solve()

const int INF = 1e9;
const long long LINF = 1e18;
const long double PI = asin(1)*2;
const int MOD = 1e9+7;

using namespace std;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef map<int, int> mii;
typedef long long ll;
typedef long double ld;

void setIO()
{
    FAST_IO;
}

void setIO (string s) {
    setIO();
 	freopen((s+".in").c_str(),"r",stdin);
 	freopen((s+".out").c_str(),"w",stdout);
}

const int N = 4e5+100;

ll n, m, a[N];

int main()
{
    setIO();
    cin >> n >> m;
    FOR(i, 0, n)
    {
        cin >> a[i+1];
        a[i+1] -= (i+1)*m;
    }
    vector<ll> ls;
    ls.PB(0);
    FOR(i, 1, n+1)
    {
        ll l = 0, r = ls.size();
        while(l<r)
        {
            int m = (l+r)/2;
            if(ls[m]>=a[i]) l = m+1;
            else r = m;
        }

        if(l == 0)
        {
        //    if(ls[l+1]<a[i])
          //      ls[l+1] = a[i];
        }
        else
        {
            if(r == (int)ls.size())
            {
                ls.PB(a[i]);
            }
            else
            {
                ls[l] = a[i];
            }
        }
    }

    cout << n-(int)ls.size()+1;
}

컴파일 시 표준 에러 (stderr) 메시지

triusis.cpp: In function 'void setIO(std::string)':
triusis.cpp:31:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |   freopen((s+".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen((s+".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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