http://codeforces.com/contest/1131
A
1 #include<bits/stdc++.h> 2 using namespace std; 3 #define lson l,mid,rt<<1 4 #define rson mid+1,r,rt<<1|1 5 #define sqr(x) ((x)*(x)) 6 #define pb push_back 7 #define eb emplace_back 8 #define maxn 1000005 9 #define rep(k,i,j) for(int k=i;k<j;k++) 10 typedef long long ll; 11 typedef unsigned long long ull; 12 13 14 int main(){ 15 #ifndef ONLINE_JUDGE 16 // freopen("input.txt","r",stdin); 17 #endif 18 std::ios::sync_with_stdio(false); 19 ll w1,h1,w2,h2; 20 cin>>w1>>h1>>w2>>h2; 21 ll tmp1=(w2+2)*(h2+2);//上面的 22 ll tmp2=(w1+2)*(h1+2); 23 ll tmp3=w1*h1+w2*h2; 24 ll ans=tmp1+tmp2-tmp3-2*(w2+2); 25 cout<<ans<<endl; 26 }