代码

#include<bits/stdc++.h>
using namespace std;
#define ll int
#define f(i,a,b) for(ll i=a;i<=b;i++)
#define wt int tt=d;while(tt--)
#define py puts("Yes")
#define pn puts("No")
#define fe(i,e) for(int i=0;i<e.size();i++)
#define vi vector<ll>
inline ll rd() {
	ll x=0,f=1;
	char c=getchar();
	while(!isdigit(c)){if(c=='-')f=-1;c=getchar();}
	while(isdigit(c))x=x*10+c-'0',c=getchar();
	return x*f;
}
ll dx[4]={0,1,0,-1};
ll dy[4]={1,0,-1,0};
#define d rd()
#define pb push_back
const ll N=300010;
struct edge{ll v,w,nx;}e[N<<1];
ll hd[N],cnt;
void add(ll u,ll v,ll w){e[++cnt]=(edge){v,w,hd[u]};hd[u]=cnt;}
ll qp(ll a,ll b,ll p){
	ll ans=1;while(b){
		if(b&1)ans=ans*a%p;
		a=a*a%p;b>>=1;
	}return ans;
}ll n,m;

int main(){
	printf("%d",d+d);
	return 0;
}

评测结果