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Submission #550934

# Submission time Handle Problem Language Result Execution time Memory
550934 2022-04-19T12:14:59 Z colossal_pepe Skyline (IZhO11_skyline) C++17
100 / 100
 179 ms 56128 KB 
#include <iostream>
#include <cstring>
using namespace std;
 
/*
dp[i][carry][carry, pass forward] = min cost for range [i...n]
*/
 
const int INF = 1e9;
 
int n, h[305], dp[305][205][205];
 
int brutus(int i, int j, int k) {
    if (i > n + 1) return 0;
    if (dp[i][j][k] != -1) return dp[i][j][k];
    if (j == 0) dp[i][j][k] = brutus(i + 1, k, h[i + 1]);
    else {
        dp[i][j][k] = brutus(i, j - 1, k) + 3;
        if (min(j, k) > 0) dp[i][j][k] = min(dp[i][j][k], brutus(i, j - 1, k - 1) + 5);
        if (j <= k and j <= h[i + 1]) dp[i][j][k] = min(dp[i][j][k], brutus(i + 1, k - j, h[i + 1] - j) + 7 * j);
    }
    return dp[i][j][k];
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    memset(dp, -1, sizeof(dp));
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> h[i];
    }
    h[0] = 0, h[n + 1] = 0;
    cout << brutus(1, h[0], h[1]) << '\n';
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 50388 KB Output is correct
2 Correct 20 ms 50388 KB Output is correct
3 Correct 19 ms 50388 KB Output is correct
4 Correct 20 ms 50516 KB Output is correct
5 Correct 20 ms 50476 KB Output is correct
6 Correct 21 ms 50388 KB Output is correct
7 Correct 20 ms 50484 KB Output is correct
8 Correct 21 ms 50416 KB Output is correct
9 Correct 23 ms 50540 KB Output is correct
10 Correct 25 ms 50656 KB Output is correct
11 Correct 40 ms 51876 KB Output is correct
12 Correct 24 ms 50744 KB Output is correct
13 Correct 35 ms 51924 KB Output is correct
14 Correct 43 ms 52496 KB Output is correct
15 Correct 108 ms 54876 KB Output is correct
16 Correct 103 ms 54548 KB Output is correct
17 Correct 152 ms 56128 KB Output is correct
18 Correct 179 ms 55964 KB Output is correct
19 Correct 150 ms 55600 KB Output is correct
20 Correct 151 ms 56104 KB Output is correct