题解——Codeforces Round #507 (based on Olympiad of Metropolises) T2(模拟)

T2还是模拟

枚举一下第一个放哪里

然后贪心的反转即可

虽然我也不会证，但是这题肯定有解qwq

#include <cstdio>
#include <algorithm>
#include <cstring>
using namespace std;
int n,k,ans=0x3f3f3f3f,path[1200],midpath[1200],midans;
int main(){
  scanf("%d %d",&n,&k);
  for(int i=1;i<=k+1;i++){
  int l=i,r=k+i;
  midans=1;
  midpath[1]=i;
  while(r<n){
    midans++;
    l=r+1;
    r=l+2*k;
  //  printf("%d %d\n",l,r);
    midpath[midans]=k+l;
    }
  if(midans<ans){
    ans=midans;
    memcpy(path,midpath,sizeof(midpath) );
    }
  }
  printf("%d\n",ans);
  for(int i=1;i<=ans;i++)
    printf("%d ",path[i]);
  return 0;
}