Submission #710292

#	Time	Username	Problem	Language	Result	Execution time	Memory
710292		CDuong	Carnival (CEOI14_carnival)	C++17	100 / 100	13 ms	328 KiB

carnival

/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/

#include <bits/stdc++.h>
#define taskname ""
#define all(x) x.begin(), x.end()
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define pii pair<int, int>
#define vi vector<int>
using namespace std;

const int mxN = 2e5 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;

int n, ans[mxN];
vi diff;

int ask(int l, int r, int idx) {
    cout << r - l + 2 << " ";
    for(int i = l; i <= r; ++i)
        cout << diff[i] << " ";
    cout << idx << endl;

    int ans; cin >> ans;
    return ans;
}

int binary_search(int idx) {
    int l = 0, r = diff.size() - 1, ans = diff.size() + 1;
    while(l <= r) {
        int mid = (l + r) >> 1;
        int tmp = ask(l, mid, idx);
        if(tmp == mid - l + 1)
            ans = mid + 1, r = mid - 1;
        else
            l = mid + 1;
    }

    if(ans == (int)diff.size() + 1)
        diff.pb(idx);
    return ans;
}

void solve() {
    cin >> n;
    diff.pb(1); ans[1] = 1;
    for(int i = 2; i <= n; ++i)
        ans[i] = binary_search(i);
    
    cout << 0 << " ";
    for(int i = 1; i <= n; ++i)
        cout << ans[i] << " ";
    cout << endl;
}

signed main() {

#ifndef CDuongg
    if(fopen(taskname".inp", "r"))
        assert(freopen(taskname".inp", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
    freopen("bai3.inp", "r", stdin);
    freopen("bai3.out", "w", stdout);
    auto start = chrono::high_resolution_clock::now();
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; //cin >> t;
    while(t--) solve();

#ifdef CDuongg
    auto end = chrono::high_resolution_clock::now();
    cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
    cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif

}

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