Submission #1157569

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1157569	2025-02-26 02:15:52	ocasu	Carnival (CEOI14_carnival)	C++20	0 / 100	7 ms	408 KiB

carnival

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#include <bits/stdc++.h>
using namespace std;
#define int long long
int ask(int i, int j){
    cout<<j-i+1<<' ';
    for (int x=i; x<=j; x++) {
        cout<<x;
        if (x<j) cout<<' ';
    }
    cout<<endl;
    int ans; cin>>ans;
    return ans;
}
signed main(){
    int n; cin>>n;
    vector<int> col(n+1,0);
    int cur=0;
    for (int i=1; i<n; i++){
        int a = i+1, b = n; 
        while (a != b) { 
            int mid = (a+b)/2; 
            int que=ask(i,mid);
            if (que==ask(i+1,mid)) { 
                b = mid; 
            }
            else { 
                a = mid+1; 
 
 
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