Submission #267988

#	Time	Username	Problem	Language	Result	Execution time	Memory
267988		stefantaga	medians (balkan11_medians)	C++14	100 / 100	85 ms	4216 KiB

medians

#include<bits/stdc++.h>
#define DIM 200005
using namespace std;
int n, i, p, u;
int v[DIM], ff[DIM], sol[DIM];
int main()
{
    #ifdef HOME
    ifstream cin("medians.in");
    ofstream cout("medians.out");
    #endif // HOME
    cin>> n;
    for(i = 1; i <= n; i++){
        cin>> v[i];
    }
    sol[1] = v[1];
    ff[ v[1] ] = 1;
    p = 1;
    u = 2 * n - 1;
    for(i = 2; i <= n; i++){
        while(ff[p] == 1){
            p++;
        }
        while(ff[u] == 1){
            u--;
        }
        if(v[i] == v[i - 1]){
            sol[2 * i - 2] = p;
            sol[2 * i - 1] = u;
            ff[p] = ff[u] = 1;
        }
        else{
            if(ff[ v[i] ] == 0){
                sol[2 * i - 2] = v[i];
                ff[ v[i] ] = 1;
                if(v[i] > v[i - 1]){
                    sol[2 * i - 1] = u;
                    ff[u] = 1;
                }
                else{
                    sol[2 * i - 1] = p;
                    ff[p] = 1;
                }
            }
            else{
                if(v[i] > v[i - 1]){
                    sol[2 * i - 2] = u;
                    ff[u] = 1;
                    while(ff[u] == 1){
                        u--;
                    }
                    sol[2 * i - 1] = u;
                    ff[u] = 1;
                }
                else{
                    sol[2 * i - 2] = p;
                    ff[p] = 1;
                    while(ff[p] == 1){
                        p++;
                    }
                    sol[2 * i - 1] = p;
                    ff[p] = 1;
                }
            }
        }
    }
    for(i = 1; i <= 2 * n - 1; i++){
        cout<< sol[i] <<" ";
    }
}

• Subtask 1: 65 / 65
• Subtask 2: 35 / 35