oj.uz

Submission #63444

# Submission time Handle Problem Language Result Execution time Memory
63444 2018-08-01T19:55:25 Z knon0501 None (KOI18_matrix) C++11
9 / 100
 4000 ms 174384 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 lef,int rig,int lev1,int lev2){
    stack<int> S;
    S.push(lef);
    S.push(rig);
    S.push(lev2);
    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);
        }
    }
    return k;
}
inline int f(int x,int y,int lef,int rig,int lev){
    stack<int> S;
    S.push(lef);
    S.push(rig);
    S.push(lev);
    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,1,nn,lv,1));
        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,nn,1)+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)
                seg[nn*2*i+j]=seg[nn*2*i+j]>k ? seg[nn*2*i+j]:k;
        }
        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(m==3)process();
    return 0;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 748 ms 34548 KB Output is correct
2 Correct 555 ms 34548 KB Output is correct
3 Correct 1319 ms 53088 KB Output is correct
4 Correct 1669 ms 60844 KB Output is correct
5 Correct 1091 ms 60844 KB Output is correct
6 Correct 473 ms 60844 KB Output is correct
7 Correct 1559 ms 60844 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 748 ms 34548 KB Output is correct
2 Correct 555 ms 34548 KB Output is correct
3 Correct 1319 ms 53088 KB Output is correct
4 Correct 1669 ms 60844 KB Output is correct
5 Correct 1091 ms 60844 KB Output is correct
6 Correct 473 ms 60844 KB Output is correct
7 Correct 1559 ms 60844 KB Output is correct
8 Execution timed out 4059 ms 174384 KB Time limit exceeded
9 Halted 0 ms 0 KB -