oj.uz

Submission #63451

# Submission time Handle Problem Language Result Execution time Memory
63451 2018-08-01T20:18:06 Z knon0501 None (KOI18_matrix) C++14
0 / 100
 3 ms 356 KB 
#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
int n,m;
const int MX=2e5+5;
pair<int,pair<int,int>> a[MX];
unordered_map<long long,int> seg;
unordered_map<int,int> xx;
unordered_map<int,int> yy;
long long nn;
int ans;
int p;

inline int g(int y,int lev1){
    stack<int> S;
    S.push(1);
    S.push(nn);
    S.push(1);
    int k=0;
    while(!S.empty()){
        int lv=S.top();S.pop();
        int r=S.top();S.pop();
        int l=S.top();S.pop();
        if(l>=y)continue;
        if(r<y)k=max(k,seg[nn*2*lev1+lv]);
        else{
            S.push(l);
            S.push((l+r)/2);
            S.push(lv*2);
            S.push((l+r)/2+1);
            S.push(r);
            S.push(lv*2+1);
        }
        if(k==ans)return ans;
    }
    return k;
}
inline int f(int x,int y){
    stack<int> S;
    S.push(1);
    S.push(nn);
    S.push(1);
    int k=0;
    while(!S.empty()){
        int lv=S.top();S.pop();
        int r=S.top();S.pop();
        int l=S.top();S.pop();
        if(l>=x)continue;
        if(r<x)k=max(k,g(y,lv));
        else{
            S.push(l);
            S.push((l+r)/2);
            S.push(lv*2);
            S.push((l+r)/2+1);
            S.push(r);
            S.push(lv*2+1);
        }
    }
    return k;
}
void process(){
    int i,j;
    for(nn=1 ; nn<n ; nn*=2);
    for(i=1 ; i<=n ; i++)cin>>a[i].f;
    for(i=1 ; i<=n ; i++)cin>>a[i].s.f;
    for(i=1 ; i<=n ; i++)cin>>a[i].s.s;
    sort(a+1,a+n+1);
    set<int> S1;
    set<int> S2;
    for(i=1 ; i<=n ; i++){
        S1.insert(a[i].s.f);
        S2.insert(a[i].s.s);
    }
    int cnt=0;
    for(auto &i:S1)xx[i]=++cnt;
    cnt=0;
    for(auto &i:S2)yy[i]=++cnt;

    for(int ii=1 ; ii<=n ; ii++){
        int k=f(xx[a[ii].s.f],yy[a[ii].s.s])+1;

        for(i=nn+xx[a[ii].s.f]-1 ; i>=1 ; i/=2){
            for(j=nn+yy[a[ii].s.s]-1 ; j>=1 ; j/=2)
                if(seg[nn*2*i+j]<k)
                    seg[nn*2*i+j]=k;
                else
                    break;

        }
        ans=ans>k?ans:k;
    }

    cout<<ans;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>m>>n;
    if(n>5000)return 0;
    if(m==3)process();
    return 0;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 356 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 62.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 356 KB Output isn't correct
2 Halted 0 ms 0 KB -