Submission #167218

#	Time	Username	Problem	Language	Result	Execution time	Memory
167218		rzbt	trapezoid (balkan11_trapezoid)	C++14	75 / 100	653 ms	47372 KiB

trapezoid

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 100005
#define MOD 30013
typedef long long ll;


using namespace std;

int n;
pair<pair<int,int>, pair<int,int> > niz[MAXN];
set<int> sg,sd;
map<int,int> mg,md;
pair<int,int>  ubaci[2*MAXN],pitaj[2*MAXN];
pair<int,int> seg[8*MAXN];
pair<int,int> tres[MAXN];
pair<int,int> res;

void dodaj(int l,int d,int p,int k,pair<int,int> x){

    if(l==d){
        seg[k]=x;
        return;
    }
    int mid=(l+d)/2;
    if(p<=mid)dodaj(l,mid,p,k+k,x);
    else dodaj(mid+1,d,p,k+k+1,x);
    if(seg[k+k].F==seg[k+k+1].F)seg[k]=mp(seg[k+k].F,(seg[k+k].S+seg[k+k+1].S)%MOD);
    else seg[k]=max(seg[k+k],seg[k+k+1]);
    //printf("    %d %d %d\n",k,seg[k].F,seg[k].S);
}

pair<int,int> dobij(int l,int d,int tl,int td,int k){
    if(l>td || d<tl)return mp(0,0);
    if(l>=tl && d<=td)return seg[k];
    int mid=(l+d)/2;
    auto levo=dobij(l,mid,tl,td,k+k);
    auto desno=dobij(mid+1,d,tl,td,k+k+1);
    //printf("%d %d\n",levo.F,desno.F);
    if(levo.F==desno.F)return mp(levo.F,(levo.S+desno.S)%MOD);
    return max(levo,desno);
}



int main()
{
    scanf("%d", &n);
    for(int i=1;i<=n;i++){
        int a,b,c,d;
        scanf("%d %d %d %d", &a, &b, &c, &d);
        niz[i]=mp(mp(a,b),mp(c,d));
        sg.insert(a);
        sg.insert(b);
        sd.insert(c);
        sd.insert(d);
    }
    int brojac=1;
    for(auto x:sg){
        mg[x]=brojac;
        brojac++;
    }
    brojac=1;
    for(auto x:sd){
        md[x]=brojac;
        brojac++;
    }
    for(int i=1;i<=n;i++){
        niz[i].F.F=mg[niz[i].F.F];
        niz[i].F.S=mg[niz[i].F.S];
        niz[i].S.F=md[niz[i].S.F];
        niz[i].S.S=md[niz[i].S.S];
        pitaj[niz[i].F.F]=mp(niz[i].S.F,i);
        ubaci[niz[i].F.S]=mp(niz[i].S.S,i);
    }
    for(int i=1;i<=n+n;i++){
        //printf("   %d %d",seg[1])
        if(pitaj[i].F){

            pair<int,int> ans=dobij(1,n+n,1,pitaj[i].F,1);
            if(ans==mp(0,0))ans=mp(0,1);

            ans.F++;

            tres[pitaj[i].S]=ans;
            if(ans.F>res.F)
                res=ans;
            else if(ans.F==res.F)
                res.S+=ans.S;
                res.S%=MOD;
            }else{

                dodaj(1,n+n,ubaci[i].F,1,tres[ubaci[i].S]);
            }

    }
    printf("%d %d",res.F,res.S);

    return 0;
}

Compilation message (stderr)

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:92:18: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
             else if(ans.F==res.F)
                  ^~
trapezoid.cpp:94:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
                 res.S%=MOD;
                 ^~~
trapezoid.cpp:52:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
trapezoid.cpp:55:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &a, &b, &c, &d);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 75 / 100