Submission #532410

#	Time	Username	Problem	Language	Result	Execution time	Memory
532410		OttoTheDino	Swap (BOI16_swap)	C++17	68 / 100	74 ms	20380 KiB

swap

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

#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (int i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

const int mx = 2e5;
int a[2*mx+1];
map<ii, int> dp;

int dfs (int u, int val) {
    if (dp[{u,val}]) return dp[{u,val}];
    int mi = min(val, min(a[2*u], a[2*u+1]));
    if (mi==a[2*u+1]) {
        if (val < a[2*u]) dp[{u,val}] = min (dfs(2*u, val), dfs(2*u+1, val)) + 1;
        else if (dfs(2*u, a[2*u]) <= dfs (2*u+1, a[2*u])) dp[{u,val}] = dfs (2*u+1, val) + 1;
        else dp[{u,val}] = dfs (2*u, val) + 1;
    }
    else if (mi==a[2*u]) dp[{u,val}] = dfs (2*u, val) + 1;
    else dp[{u,val}] = 1;
    return dp[{u,val}];
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    rep (i,1,2*mx) a[i] = 1e9;

    int n; cin >> n;
    rep (i,1,n) cin >> a[i];

    rep (i,1,n) {
        int mi = min(a[i], min(a[2*i], a[2*i+1]));
        if (a[2*i+1]==mi) {
            int mi2 = min(a[i], a[2*i]), ma = max(a[i], a[2*i]);
            int l = dfs (2*i, mi2), r = dfs (2*i+1, mi2);
            a[2*i] = mi2;
            a[2*i+1] = ma;
            if (l>r) swap (a[2*i], a[2*i+1]);
        }
        else if (a[2*i]==mi) a[2*i] = a[i];
        a[i] = mi;
    }

    rep (i,1,n) cout << a[i] << " \n"[i==n];

    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 27 / 27
• Subtask 4: 20 / 20
• Subtask 5: 0 / 32