找出循环周期即可了

#include<bits/stdc++.h>

using namespace std;

int N,M,X;

int time(int x,int y,int z)

{

    if(z!=0&&x==1)

        return z;

    if(x%2==0)

        x/=2;

    else

        x=(x+y+1)/2;

    return time(x,y,z+1);

}

int operate(int x)

{

    if(x<=N/2)

        return x*2;

    else

        return (x-N/2)*2-1;

}

int main()

{

    while(scanf("%d%d%d",&N,&M,&X)==3)

    {

        M%=time(1,N,0);

        for(int i=1;i<=X;i++)

        {

            if(i!=1)

                printf(" ");

            int ans=i;

            for(int j=1;j<=M;j++)

                ans=operate(ans);

            printf("%d",ans);

        }

        printf("\n");

    }

    return 0;

}