oj.uz

Submission #548811

# Submission time Handle Problem Language Result Execution time Memory
548811 2022-04-14T12:20:30 Z AKiko Safety (NOI18_safety) C++14
24 / 100
 2000 ms 1832 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define ss second
#define ff first
#define pb push_back
#define pii pair<int, int>
#define INF INT_MAX
using namespace std;
void debug_out() { cerr << endl; }
template<typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << ' ' << H; debug_out(T...); }
#ifdef AKIKO_DEBUG
#define debug(...) cerr << "\033[1;31m(" << #__VA_ARGS__ << "):\033[0m", debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif

#define FAST ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const ll MOD = 1e9 + 7;
const int N = 5e3 + 1;
int n, h;
vector<int> a;



void go () {
    sort(a.begin(), a.end());
    vector<ll> pres(n);
    for(int i = 0; i < n; i++) {
        if(i == 0) {
            pres[i] = a[i];
        } else {
            pres[i] = a[i] + pres[i - 1];
        }
    }
    ll ans = INT64_MAX;
    for(int i = 0; i < n; i++) {
        int x = a[i];
        ll temp = (x * i) - (i > 0 ? pres[i - 1] : 0);
        ll sum = pres[n - 1] - (i > 0 ? pres[i - 1] : 0);
        temp += sum - (n - i) * x;
        ans = min(ans, temp);
    }
    cout << ans << "\n";
}

int main() {
    cin >> n >> h;
    a.resize(n);
    h = min (h, N);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }

    if(h == 0) {
        go();
        return 0;
    }
    vector<int> prev(N), cur(N);
    for(int i = 0; i < N; i++) {
        prev[i] = abs(a[0] - i);
    }
    
    for(int i = 1; i < n; i++) {
        set<pii> s;
        for(int j = 0; j <= h; j++) {
            s.insert({prev[j], j});
        }
        for(int j = 0; j < N; j++) {
            cur[j] = (*s.begin()).ff + abs(a[i] - j);
            if(j >= h)
                s.erase({prev[j - h], j - h});
            if(j + h + 1 < N) 
                s.insert({prev[j + h + 1], j + h + 1});
        }
        prev = cur;
    }

    int ans = INF;
    for(int i = 0; i < N; i++) {
        ans = min(ans, cur[i]);
    }
    cout << ans << "\n";



    return 0;
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?)
    * do smth instead of nothing and stay organized
    * WRITE STUFF DOWN
    * DON'T GET STUCK ON ONE APPROACH
*/

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 5 ms 212 KB Output is correct
5 Correct 4 ms 212 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 59 ms 1832 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 5 ms 212 KB Output is correct
12 Correct 4 ms 212 KB Output is correct
13 Correct 225 ms 312 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 219 ms 588 KB Output is correct
16 Correct 280 ms 340 KB Output is correct
17 Correct 278 ms 340 KB Output is correct
18 Correct 202 ms 340 KB Output is correct
19 Correct 123 ms 316 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 5 ms 212 KB Output is correct
12 Correct 4 ms 212 KB Output is correct
13 Correct 225 ms 312 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 219 ms 588 KB Output is correct
16 Correct 280 ms 340 KB Output is correct
17 Correct 278 ms 340 KB Output is correct
18 Correct 202 ms 340 KB Output is correct
19 Correct 123 ms 316 KB Output is correct
20 Correct 236 ms 548 KB Output is correct
21 Correct 306 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 161 ms 548 KB Output is correct
24 Correct 294 ms 480 KB Output is correct
25 Correct 202 ms 468 KB Output is correct
26 Correct 290 ms 364 KB Output is correct
27 Correct 124 ms 352 KB Output is correct

Subtask #7
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 5 ms 212 KB Output is correct
12 Correct 4 ms 212 KB Output is correct
13 Correct 225 ms 312 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 219 ms 588 KB Output is correct
16 Correct 280 ms 340 KB Output is correct
17 Correct 278 ms 340 KB Output is correct
18 Correct 202 ms 340 KB Output is correct
19 Correct 123 ms 316 KB Output is correct
20 Correct 236 ms 548 KB Output is correct
21 Correct 306 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 161 ms 548 KB Output is correct
24 Correct 294 ms 480 KB Output is correct
25 Correct 202 ms 468 KB Output is correct
26 Correct 290 ms 364 KB Output is correct
27 Correct 124 ms 352 KB Output is correct
28 Correct 1328 ms 460 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Execution timed out 2086 ms 468 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #8
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 5 ms 212 KB Output is correct
12 Correct 4 ms 212 KB Output is correct
13 Incorrect 2 ms 340 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #9
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 4 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 5 ms 212 KB Output is correct
12 Correct 4 ms 212 KB Output is correct
13 Incorrect 2 ms 340 KB Output isn't correct
14 Halted 0 ms 0 KB -