Submission #1354781

#TimeUsernameProblemLanguageResultExecution timeMemory
1354781otariusStaring Contest (BOI23_staringcontest)C++20
100 / 100
4 ms432 KiB
#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;

// #pragma GCC optimize("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rngl(chrono::steady_clock::now().time_since_epoch().count());

// #define int long long
// #define int unsigned long long

// #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>
// #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>

// const ll mod = 1e9 + 7;
// const ll mod = 998244353;

const ll inf = 1e9;
const ll biginf = 1e18;
const int maxN = 1e6 + 15;

int ask(int i, int j) {
    cout << "? " << i << ' ' << j << endl;
    int ret; cin >> ret; return ret;
}
void solve() {
    int n; cin >> n; int p[n + 1];
    for (int i = 1; i <= n; i++) p[i] = i;

    shuffle(p + 1, p + n + 1, rng);

    int arr[n + 1];
    int a = p[1], b = p[2], ab = ask(a, b);
    for (int i = 3; i <= n; i++) {
        int ap = ask(a, p[i]);
        if (ap < ab) arr[p[i]] = ap;
        else if (ap > ab) {
            arr[b] = ab; ab = ap; b = p[i];
        } else {
            arr[a] = ap; a = p[i]; ab = ask(a, b);
        }
    }

    arr[a] = arr[b] = ab;

    cout << "! ";
    for (int i = 1; i <= n; i++)
        cout << arr[i] << ' ';
    cout << endl;
}
int32_t main() { 
// #ifndef ONLINE_JUDGE
//     freopen("input.txt", "r", stdin);
//     freopen("output.txt", "w", stdout);
// #endif
    // ios_base::sync_with_stdio(false);
    // cin.tie(nullptr); cout.tie(nullptr);
    
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
        // cout << '\n';
    }
    return 0;
}
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