Codeforces 527A Glass Carving

 1 // File Name: a.cpp
 2 // Author: darkdream
 3 // Created Time: 2015年03月18日 星期三 00时41分16秒
 4 
 5 #include<vector>
 6 #include<list>
 7 #include<map>
 8 #include<set>
 9 #include<deque>
10 #include<stack>
11 #include<bitset>
12 #include<algorithm>
13 #include<functional>
14 #include<numeric>
15 #include<utility>
16 #include<sstream>
17 #include<iostream>
18 #include<iomanip>
19 #include<cstdio>
20 #include<cmath>
21 #include<cstdlib>
22 #include<cstring>
23 #include<ctime>
24 #define LL long long
25 
26 using namespace std;
27 LL solve(LL a, LL b)
28 {
29     
30    if(b > a )
31        swap(a,b);
32    if(b == 0 )
33        return 0; 
34    return a/b + solve(b,a%b);
35 }
36 int main(){
37   LL n , m; 
38   scanf("%lld %lld",&n,&m);
39   printf("%lld\n",solve(n,m)); 
40 return 0;
41 }