#include <bits/stdc++.h> using namespace std; #define mod 1000000007 #define oo 2000000000 const int N = 300010; int num[N]; int ask(int l,int r){ if(r == l) return 1; printf("%d",r-l+1); for(int i=l;i<=r;i++) printf(" %d",i); puts(""); fflush(stdout); int res ; scanf("%d",&res); return res; } int main() { //freopen("in.txt","r",stdin); int n , cnt = 1; scanf("%d",&n); for(int i=1;i<=n;i++){ if(num[i] == 0){ num[i] = cnt++; } int low = i + 1, high = n , res = i; while(high >= low){ int mid = (low + high) / 2; int cur = ask(i,mid); int cur2 = ask(i+1,mid); if(cur == cur2){ res = mid; high = mid - 1; } else{ low = mid + 1; } } num[res] = num[i]; } putchar('0'); for(int i=1;i<=n;i++) printf(" %d",num[i]); puts(""); return 0; }

carnival.cpp: In function 'int ask(int, int)':
carnival.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&res);
                  ^
carnival.cpp: In function 'int main()':
carnival.cpp:22:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^