oj.uz

Submission #282717

# Submission time Handle Problem Language Result Execution time Memory
282717 2020-08-24T19:26:15 Z medmdg Arranging Shoes (IOI19_shoes) C++14
0 / 100
 1 ms 512 KB 
#include <bits/stdc++.h>

using namespace std;
const int MAX_N=1e5+9;
int a[8*MAX_N];
void build(int l,int r, int p){
    if(l==r){
        a[p]=l;
    }
    build(l,(l+r)/2,p*2);
    build((l+r)/2+1,r,p*2+1);
    a[p]=0;
    return;
}
int find(int value,int l, int r, int p){
    if(l==r){
        if(l==value){
            return a[p];
        }else{
            return 0;
        }
    }
    a[p*2]+=a[p];
    a[p*2+1]+=a[p];
    a[p]=0;
    if(l>value||value>r){
        
        return 0;
    }
    return find(value,(r+l)/2+1,r,p*2+1)+find(value,l,(r+l)/2,p*2);
    
}
void update(int x,int y,int l,int r,int p){
    if(l==r){
        if( r<=y && r>=x )
            a[p]++;
        return;
    }
    a[p*2]+=a[p];
    a[p*2+1]+=a[p];
    a[p]=0;
    if(r<x||l>y)
        return;
    if(r<=y&&l>=x){
        a[p*2]++;
        a[p*2+1]++;
        return;
    }
    update(x,y,l,(l+r)/2,p*2);
    update(x,y,(l+r)/2+1,r,p*2+1);
    return;
}
long long count_swaps(std::vector<int> S){
    int n=S.size()/2;
    long long int ans=0;
    build(0,n*2-1,1);
    vector<vector<int> > h(n*2);
    for(int i=0;i<n*2;i++){
        if(h[S[i]*(-1)+n].size()==0){
            h[(S[i]+n)].push_back(i);
        }else{
            int x=find(h[S[i]*(-1)+n][0],0,2*n-1,1);
            int y=find(i,0,2*n-1,1);
            if(S[i]<0)
                ans++;
            ans+=y-x;
            ans--;
            update(h[S[i]*(-1)+n][0],i,0,2*n-1,1);
            h[S[i]*(-1)+n].erase(h[S[i]*(-1)+n].begin());
        }
    }
    return ans;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 512 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -