oj.uz

Submission #218201

# Submission time Handle Problem Language Result Execution time Memory
218201 2020-04-01T13:56:42 Z toxic_hack Swap (BOI16_swap) C++14
100 / 100
 264 ms 28692 KB 
// g++ -std=c++14

/*

Today might be the chance to grasp the chance to let your talent bloom.
May be tomorrow, the day after, or next year...
May be even when you are 30. I'm not sure if physique has anything to do with it
but if you think that it will never come, it probably never will.

- Tooru Oikawa.

*/


#include<bits/stdc++.h>

typedef long long ll;
typedef long double lld;
using namespace std;

#define endl "\n"
#define fi first
#define se second
#define MEMS(a,b) memset(a,b,sizeof(a))
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define __ freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);
#define all(c) c.begin(),c.end()
#define pii pair<int, int>

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r)
{
	uniform_int_distribution<int> uid(l, r);
	return uid(rng);
}

#define tr(...) cout<<__FUNCTION__<<' '<<__LINE__<<" = ";trace(#__VA_ARGS__, __VA_ARGS__)
template<typename S, typename T>
ostream& operator<<(ostream& out,pair<S,T> const& p){out<<'('<<p.fi<<", "<<p.se<<')';return out;}

template<typename T>
ostream& operator<<(ostream& out,vector<T> const& v){
ll l=v.size();for(ll i=0;i<l-1;i++)out<<v[i]<<' ';if(l>0)out<<v[l-1];return out;}

template <typename T>
ostream &operator<<(ostream &out, set<T> const &v) {
    for (auto i = v.begin(); i != v.end(); i++)
        out << (*i) << ' ';
    return out;
}
template <typename T>
ostream &operator<<(ostream &out, multiset<T> const &v) {
    for (auto i = v.begin(); i != v.end(); i++)
        out << (*i) << ' ';
    return out;
}
template <typename T, typename V>
ostream &operator<<(ostream &out, map<T, V> const &v) {
    for (auto i = v.begin(); i != v.end(); i++)
        out << "\n" << (i->first) <<  ":"  << (i->second);
    return out;
}

template<typename T>
void trace(const char* name, T&& arg1){cout<<name<<" : "<<arg1<<endl;}

template<typename T, typename... Args>
void trace(const char* names, T&& arg1, Args&&... args){
const char* comma = strchr(names + 1, ',');cout.write(names, comma-names)<<" : "<<arg1<<" | ";trace(comma+1,args...);}

// #define int ll

const int N = 2e5 + 10;
const int inf = 1e9 + 1;
int n, arr[N];

map<pii, int> dp;

int f(int ind, int val) {
    if (dp.count({ind, val})) return dp[{ind, val}];
    int &ans = dp[{ind, val}];
    if (2 * ind > n) {
        return ans = ind;
    }
    if ((2 * ind + 1) > n) {
        if (arr[2 * ind] > val) return ans = ind;
        return ans = (2 * ind);
    }
    // case 1:
    if (val < arr[2 * ind] && val < arr[2 * ind + 1]) {
        return ans = ind;
    }
    // case 2:
    else if (arr[2 * ind] < min(val, arr[2 * ind + 1])) {
        return ans = f(2 * ind, val);
    }
    // case 3:
    else {
        int a = min(val, arr[2 * ind]);
        int b = max(val, arr[2 * ind]);
        int c = arr[2 * ind + 1];
        int t1 = f(2 * ind, a), t2 = f(2 * ind + 1, a);
        if (t1 < t2) {
            if (a == val) return ans = t1;
            return ans = f(2 * ind + 1, val);
        } else {
            if (a == val) return ans = t2;
            return ans = f(2 * ind, val);
        }
    }
}

int solve() {
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> arr[i];
    }
    arr[n + 1] = inf;
    for (int i = 1; i <= n; i++) {
        if (i * 2 <= n) {
            // case 1:
            if (arr[i] < arr[2 * i] && arr[i] < arr[2 * i + 1]) continue;
            // case 2: 
            else if (arr[2 * i] < min(arr[i], arr[2 * i + 1])) {
                swap(arr[i], arr[2 * i]);
            }  
            // case 3:
            else {
                int a = min(arr[i], arr[2 * i]);
                int b = max(arr[i], arr[2 * i]);
                int c = arr[2 * i + 1];
                arr[i] = c;
                int t1 = f(2 * i, a), t2 = f(2 * i + 1, a);
                if (t1 < t2) {
                    arr[2 * i] = a;
                    arr[2 * i + 1] = b;
                } else {
                    arr[2 * i] = b;
                    arr[2 * i + 1] = a;
                }
            }
        } 
    }
    for (int i = 1; i <= n; i++) {
        cout << arr[i] << " ";
    }
    cout << endl;
    return 0;
}

int32_t main(){ _
    int t;
    // cin >> t;
    t = 1;
    while (t--) solve();
}

Compilation message

swap.cpp: In function 'int f(int, int)':
swap.cpp:100:13: warning: unused variable 'b' [-Wunused-variable]
         int b = max(val, arr[2 * ind]);
             ^
swap.cpp:101:13: warning: unused variable 'c' [-Wunused-variable]
         int c = arr[2 * ind + 1];
             ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 12 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 12 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 27 ms 3456 KB Output is correct
17 Correct 26 ms 3448 KB Output is correct
18 Correct 30 ms 3704 KB Output is correct
19 Correct 56 ms 7416 KB Output is correct
20 Correct 59 ms 7416 KB Output is correct

Subtask #5
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 12 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 27 ms 3456 KB Output is correct
17 Correct 26 ms 3448 KB Output is correct
18 Correct 30 ms 3704 KB Output is correct
19 Correct 56 ms 7416 KB Output is correct
20 Correct 59 ms 7416 KB Output is correct
21 Correct 110 ms 13048 KB Output is correct
22 Correct 108 ms 13304 KB Output is correct
23 Correct 103 ms 13028 KB Output is correct
24 Correct 262 ms 28692 KB Output is correct
25 Correct 264 ms 28664 KB Output is correct