Submission #545251

#	Time	Username	Problem	Language	Result	Execution time	Memory
545251		Jomnoi	Carnival (CEOI14_carnival)	C++17	100 / 100	9 ms	320 KiB

carnival

#include <bits/stdc++.h>
#define DEBUG 0
using namespace std;

const int N = 160;

int n, l, r, pos, mid, res, prv, now;
int ans[N];
vector <int> vec;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n;
    for(int i = 1; i <= n; i++) {
        cout << i << ' ';
        for(int j = 1; j <= i; j++) {
            cout << j << ' ';
        }
        cout << endl;

        cin >> now;
        if(now != prv) {
            vec.push_back(i);
            ans[i] = now;
            prv = now;
            continue;
        }

        l = 0, r = vec.size() - 1, pos;
        while(l <= r) {
            mid = (l + r) / 2;

            cout << mid + 2 << ' ';
            for(int i = 0; i <= mid; i++) {
                cout << vec[i] << ' ';
            }
            cout << i << endl;

            cin >> res;
            if(res < mid + 2) {
                r = mid - 1;
                pos = mid;
            }
            else {
                l = mid + 1;
            }
        }
        ans[i] = ans[vec[pos]];
    }

    for(int i = 0; i <= n; i++) {
        cout << ans[i] << ' ';
    }
    cout << endl;
    return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:29:39: warning: right operand of comma operator has no effect [-Wunused-value]
   29 |         l = 0, r = vec.size() - 1, pos;
      |                                       ^

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