hihoCoder挑战赛32

Rikka with Sequence V

构造

#pragma comment(linker, "/STACK:102400000,102400000")
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<vector>
#include<algorithm>
#include<iostream>
#include<map>
#include<queue>
#include<stack>
#include<string>
#include<functional>
//#include<bits/stdc++.h>
using namespace std;
typedef long long lint;

int cmp(const void * x, const void * y) {
#define datatype int
    datatype dx = *((datatype *)(x)), dy = *((datatype *)(y));
    //x < y
    return dx > dy ?  : -;
#undef datatype
}

lint dp[][];
const int mod = ;

int main() {
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
#endif
    std::ios::sync_with_stdio(), cin.tie();
    int n;
    cin >> n;
    for (int i = ; i <= n; i += ) cout << i << ' ';
    for (int i = n - n % ; i > ; i -= ) cout << i << ' ';
    return ;
}

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