제출 #1241221

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1241221		skibidi123	Financial Report (JOI21_financial)	C++20	33 / 100	231 ms	13408 KiB

Main

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

void init() {
    #define task "main"
    if (fopen(task".INP","r")) {
        freopen(task".INP","r",stdin);
        freopen(task".OUT","w",stdout);
    }
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
}
const int N=3e5+5;
int a[N],f[N],tr[4*N];
int n,d;
int qr(int i,int l,int r,int x,int y){
    if(y<x)return 0;
    if(y<l||x>r)return 0;
    if(l>=x&&r<=y)return tr[i];
    int m=l+r>>1;
    return max(qr(2*i,l,m,x,y),qr(2*i+1,m+1,r,x,y));
}
void upd(int i,int l,int r,int id,int k){
    if(id>r||id<l)return;
    if(l==r){
        tr[i]=k;
        return;
    }
    int m=l+r>>1;
    upd(2*i,l,m,id,k);
    upd(2*i+1,m+1,r,id,k);
    tr[i]=max(tr[2*i],tr[2*i+1]);
}
int main(){
    init();
    cin>>n>>d;
    vector<int>b;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        b.push_back(a[i]);
    }
    sort(b.begin(), b.end());
    b.erase(unique(b.begin(), b.end()), b.end());
    vector<int>cnt(b.size()+1,0);
    for(int i=1;i<=n;i++)
        a[i]=lower_bound(b.begin(), b.end(),a[i])-b.begin()+1;
    priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>>q;
    int ans=0;
    for(int i=1;i<=n;i++){
        while(!q.empty()&&i-q.top().second>d){
            if(cnt[q.top().first]==q.top().second)upd(1,1,n,q.top().first,0);
            q.pop();
        }
        f[a[i]]=max(f[a[i]],qr(1,1,n,1,a[i]-1)+1);
        if(f[a[i]]>ans)ans=f[a[i]];
        upd(1,1,n,a[i],f[a[i]]);
        q.push({a[i],i});
        cnt[a[i]]=i;
    }
    cout<<ans;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void init()':
Main.cpp:8:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:9:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |         freopen(task".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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