C++约瑟夫环

 1 #include <iostream>
 2 #include <cstdio>
 3 #include <cstring>
 4 #include <cstdlib>
 5 #define sc(x) scanf("%d",&x)
 6 #define pf(x) printf("%d\n",x)
 7 #define CL(x,y) memset(x,y,sizeof(x))
 8 using namespace std;
 9 int N;
10 int fun(int m);
11 int main()
12 {
13     sc(N);
14     fun(3);
15     return 0;
16 }
17 int fun(int m)
18 {
19     int i, r = 0;
20     for (i = 2; i <= N; i++)
21     {
22         r = (r + m) % i;
23 //        cout << r << " " << i << endl;
24     }
25     cout << r+1 << endl;
26     return r+1;
27 }