제출 #1089219

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1089219		vjudge1	Financial Report (JOI21_financial)	C++17	48 / 100	48 ms	3796 KiB

Main

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

#define ff(i, a, b) for(auto i=(a); i<=(b); ++i)
#define ffr(i, b, a) for(auto i=(b); i>=(a); --i)
#define nl "\n"
#define ss " "
#define pb push_back
#define ppb pop_back()
#define pf push_front
#define ppf pop_front()
#define fi first
#define se second
#define sz(s) (int)s.size()
#define ms(a,x) memset(a, x, sizeof (a))
#define re exit(0)

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<pair<int, int> > vpii;
typedef vector<pair<ll, ll> > vpll;

const ll mod=1e9+7, maxn=1e6+5, inf=1e18;

void rf(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    if(fopen("o.inp","r")){
        freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
    }
}

int n, d, a[maxn];
int f[maxn];

void compress()
{
    vi v;
    ff(i, 1, n) v.pb(a[i]);
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(), v.end() ), v.end());
    ff(i, 1, n)
    {
        a[i]=lower_bound(v.begin(), v.end(), a[i])-v.begin()+1;
    }

}

bool checksub1()
{
    return n<=7000;
}

void sub1()
{
    int ans=0;
    ff(i, 1, n) f[i]=1;
    ff(i, 1, n)
    {
        int id=i;
        ffr(j, i, 1)
        {
            if(id-j>d) break;
            if(a[i]>a[j]) f[i]=max(f[i], f[j]+1);
            if(a[i]>=a[j]) id=j;
        }
        ans=max(ans, f[i]);
    }
    cout<<ans;
}

int main()
{
    rf();
    cin>>n>>d;
    ff(i, 1, n) cin>>a[i];
    compress();
    if(checksub1()) return sub1(), 0;
    re;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void rf()':
Main.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:34:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
      |                                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 0 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35