Submission #1042071

#	Time	Username	Problem	Language	Result	Execution time	Memory
1042071		AbdullahIshfaq	Carnival (CEOI14_carnival)	C++14	100 / 100	7 ms	600 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 1000000007
ll ask(ll x , ll y){

    cout << y - x + 1 << " ";
	for(int i = x ; i <= y ; i++){
        cout << i << " ";
    }
	cout << endl;
	int c;
    cin >> c;
	return c;
}
void solve(){
    ll w , f , n , summ = 0;
    cin >> n;
    vector<ll> ans(n + 1);
    ans[1] = 1;
    set<ll> st;
    for(int i = 2; i <= n ;i ++){
        st.clear();
        for(int j = 1 ; j <= i -1;j++){
            st.insert(ans[j]);
        }
        ll x = ask(1, i);
        ll siz = st.size();
        if(siz != x){
            ans[i] = x;
            continue;
        }
        ll l = 1,r= i;
        while(r - l > 1){
            ll mid = (l + r) / 2;
            st.clear();
            for(int j = mid; j<= i - 1;j ++){
                st.insert(ans[j]);
            }
            x = ask(mid , i);
            siz = st.size();
            if(siz == x){
                l = mid;
            }
            else{
                r = mid;
            }
        }
        ans[i] = ans[l];
    }
    cout << 0 << " ";
    for(int i = 1; i<=n ; i++){
        cout << ans[i] << " ";
    } 
    cout << endl;

}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int tests = 1;
    // cin >> tests;
    for (int i = 1; i <= tests; i++){
        solve();
    }
    return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'void solve()':
carnival.cpp:17:8: warning: unused variable 'w' [-Wunused-variable]
   17 |     ll w , f , n , summ = 0;
      |        ^
carnival.cpp:17:12: warning: unused variable 'f' [-Wunused-variable]
   17 |     ll w , f , n , summ = 0;
      |            ^
carnival.cpp:17:20: warning: unused variable 'summ' [-Wunused-variable]
   17 |     ll w , f , n , summ = 0;
      |                    ^~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20