CF1206C Almost Equal
思路
看样例的话,是不是可能偶数没用了??
然后考虑奇数的话,照着样例模拟模拟试试??
反正我打的vp,,不会掉分哒!
随便打了个代码结果AC了233
#include <bits/stdc++.h>
#define maxn 200010
using namespace std ;
int n , a[maxn] ;
int main () {
cin >> n ;
if(n %2 == 0) {
cout << "NO\n" ;
return 0 ;
}else {
puts("YES") ;
int tot = 0 ,lop = 1 ;
while(++tot != n+n+1) {
// cout << lop << " *" ;
a[lop] = tot ;
if(tot%2 == 1) {
if(lop <= n) {
lop += n ;
}else {
lop -= n ;
}
}else {
lop += 1 ;
}
}
for(int i = 1 ; i <= n+n;i ++) {
cout << a[i] << " " ;
}
}
return 0 ;
}
