Submission #1054792

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054792		cpdreamer	Financial Report (JOI21_financial)	C++14	5 / 100	239 ms	27844 KiB

Main

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <utility>
#define V vector
#define P pair
#define S second
#define F first
#define pb push_back
#define all(v) v.begin(),v.end()
typedef long long ll;
using namespace __gnu_pbds;
using namespace std;
typedef tree<int,null_type,less<int>,rb_tree_tag,
        tree_order_statistics_node_update> indexed_set;
static int called = 0;const long long MOD = 1e9+7; // 1e9 + 7

void file(){
    freopen("input.txt.txt","r",stdin);
    freopen("output.txt.txt","w",stdout);
}
void file(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct segtree{
private:
    struct node{
        int max;
    };
    node single(int v){
        return {v};
    }
    node neutral={0};
    node merge(node a,node b){
        return {max(a.max,b.max)};
    }
public:
    int size;
    V<node>query;
    void init(int n){
        size=1;
        while(size<n)size*=2;
        query.assign(2*size,neutral);
    }
    void set(int i,int v,int x,int lx,int rx){
        if(rx-lx==1){
            query[x]=single(v);
            return;
        }
        int m=(lx+rx)/2;
        if(i<m)
            set(i,v,2*x+1,lx,m);
        else
            set(i,v,2*x+2,m,rx);
        query[x]=merge(query[2*x+1],query[2*x+2]);
    }
    void set(int i,int v){
        set(i,v,0,0,size);
    }
    node calc(int l,int r,int x,int lx,int rx){
        if(lx>=r || rx<=l)
            return neutral;
        if(l<=lx && rx<=r)
            return query[x];
        int m=(lx+rx)/2;
        node a=calc(l,r,2*x+1,lx,m);
        node b=calc(l,r,2*x+2,m,rx);
        return merge(a,b);
    }
    node calc(int l,int r){
        return calc(l,r,0,0,size);
    }
};
void solve() {
    int n;
    int d;
    cin>>n>>d;
    int A[n];
    for(int i=0;i<n;i++)
        cin>>A[i];
    V<int>vp;
    for(int i=0;i<n;i++)
        vp.pb(A[i]);
    sort(all(vp));
    auto it=unique(all(vp));
    vp.resize(distance(vp.begin(),it));
    map<int,int>mp;
    for(int i=0;i<vp.size();i++)
        mp[vp[i]]=i;
    for(int i=0;i<n;i++)
        A[i]=mp[A[i]];
    int ans=1;
    segtree tree;
    tree.init(1e6);
    tree.set(A[0],1);
    for(int i=1;i<n;i++){
        int curr=tree.calc(0,A[i]).max+1;
        ans=max(ans,curr);
        tree.set(A[i],curr);
    }
    cout<<ans<<endl;

}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //file();
    solve();
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |     for(int i=0;i<vp.size();i++)
      |                 ~^~~~~~~~~~
Main.cpp: In function 'void file()':
Main.cpp:18:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     freopen("input.txt.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:19:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     freopen("output.txt.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'void file(std::string)':
Main.cpp:22:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:23:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: At global scope:
Main.cpp:15:12: warning: 'called' defined but not used [-Wunused-variable]
   15 | static int called = 0;const long long MOD = 1e9+7; // 1e9 + 7
      |            ^~~~~~

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