#include <bits/stdc++.h>
#define FOR(I, A, B) for (int I = (A); I <= (B); ++I)
#define PER(I, A, B) for (int I = (A); I >= (B); --I)
#define lson k*2
#define rson k*2+1
#define DB(A) cout<<(A)<<endl
#define DB1(A,B,C) cout<<(A)<<" "<<(B)<<" "<<(C)<<endl
#define PB push_back
#define Pair pair<int,int>
#define LL long long
#define int long long
using namespace std;
const int maxn=2e5+10;
const int MAX=30;
const int inf=0x3f3f3f3f;
//head
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);
FOR(i,1,n)
{
}
}
one for all(origin)
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转载自www.cnblogs.com/reshuffle/p/12330688.html
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