oj.uz

Submission #1008942

# Submission time Handle Problem Language Result Execution time Memory
1008942 2024-06-27T06:35:02 Z doducanh trapezoid (balkan11_trapezoid) C++14
100 / 100
 70 ms 8416 KB 
#include <bits/stdc++.h>
 
using namespace std;
#define fi first
#define se second
const int maxn=1e5+7;
const int mod=30013;
const int maxx=2e9;
pair<int,int> cmax(pair<int,int>a,pair<int,int>b)
{
    if(a.fi<b.fi)a=b;
    else{
        if(a.fi==b.fi&&a.fi!=0)a.se=(a.se+b.se)%mod;
    }
    return a;
}
int id(int x,vector<pair<int,int>> &tmp)
{
    return lower_bound(tmp.begin(),tmp.end(),make_pair(x,-maxx))-tmp.begin()+1;
}
struct BIT
{
    int n;
    vector<pair<int,int>>t;
    BIT(){}
    BIT(int n):n(n),t(n+7){}
    void up(int x,pair<int,int> val){
        for(;x<n;x+=(x&(-x)))t[x]=cmax(t[x],val);
    }
    pair<int,int>get(int x)
    {
        if(x<=0)return {0,1};
        pair<int,int>res={0,1};
        for(;x;x-=(x&(-x)))res=cmax(res,t[x]);
        return res;
    }
};
int a[maxn],b[maxn],c[maxn],d[maxn];
int n;
pair<int,int>ans[maxn];
vector<pair<int,int>>top;
vector<pair<int,int>>bot;
main()
{
//    freopen("trapezoid.in","r",stdin);
//    freopen("trapezoid.out","w",stdout);
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i]>>b[i]>>c[i]>>d[i];
        top.push_back({a[i],i});
        top.push_back({b[i],i});
        bot.push_back({c[i],i});
        bot.push_back({d[i],i});
    }
    sort(top.begin(),top.end());
    sort(bot.begin(),bot.end());
    BIT t(bot.size()+7);
    for(pair<int,int>p:top){
        int x=p.fi;
        int i=p.se;
        if(x==a[i]){
            int x=id(c[i],bot)-1;
            pair<int,int>tmp=t.get(x);
            ans[i]={tmp.fi+1,tmp.se};
        }
        else if(x==b[i]){
            int x=id(d[i],bot);
            t.up(x,ans[i]);
        }
    }
    pair<int,int>res={0,0};
    for(int i=1;i<=n;i++){
        res=cmax(res,ans[i]);
    }
    cout<<res.fi<<" "<<res.se;
    return 0;
}

Compilation message

trapezoid.cpp:43:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   43 | main()
      | ^~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2516 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 2 ms 2652 KB Output is correct
8 Correct 3 ms 2908 KB Output is correct
9 Correct 6 ms 3288 KB Output is correct
10 Correct 12 ms 4304 KB Output is correct
11 Correct 15 ms 4592 KB Output is correct
12 Correct 31 ms 6584 KB Output is correct
13 Correct 39 ms 6144 KB Output is correct
14 Correct 48 ms 7512 KB Output is correct
15 Correct 61 ms 7200 KB Output is correct
16 Correct 61 ms 6836 KB Output is correct
17 Correct 64 ms 8108 KB Output is correct
18 Correct 49 ms 7092 KB Output is correct
19 Correct 60 ms 7348 KB Output is correct
20 Correct 70 ms 8416 KB Output is correct