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Submission #927236

# Submission time Handle Problem Language Result Execution time Memory
927236 2024-02-14T13:42:33 Z math_rabbit_1028 Uplifting Excursion (BOI22_vault) C++14
20 / 100
 398 ms 160640 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;

int M;
ll L, S, arr[1010], rem[1010], ans;

ll dp[660][101010];

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

    cin >> M >> L;
    for (int i = 0; i <= 2*M; i++) cin >> arr[i];
    for (int i = 0; i <= 2*M; i++) S += (i-M)*arr[i];
    if (S < L) {
        L = -L;
        for (int i = 0; i <= M; i++) swap(arr[i], arr[2*M-i]);
    }

    S = 0;
    for (int i = 0; i <= M; i++) {
        S += (i-M)*arr[i];
        ans += arr[i];
        rem[2*M-i] = arr[i];
        arr[i] = 0;
    }
    if (S > L) {
        cout << "impossible\n";
        return 0;
    }
    for (int i = M+1; i <= 2*M; i++) {
        ll t = (L-S)/(i-M);
        if (t >= arr[i]) {
            ans += arr[i];
            rem[2*M-i] = arr[i];
            S += arr[i]*(i-M);
            arr[i] = 0;
        }
        else {
            ans += t;
            rem[2*M-i] = t;
            S += t*(i-M);
            arr[i] -= t;
            break;
        }
    }

    for (int j = 0; j <= 2*M*M; j++) dp[0][j] = -1e18;
    dp[0][M*M] = 0;
    for (int i = 1; i <= M; i++) {
        for (int j = 2*M*M; j >= 0; j--) {
            dp[i][j] = -1e18;
            for (int k = 0; k <= arr[M+i]; k++) {
                if (j-i*k < 0) break;
                dp[i][j] = max(dp[i][j], dp[i-1][j-i*k]+k);
            }
            for (int k = 0; k <= rem[M+i]; k++) {
                if (j-i*k < 0) break;
                dp[i][j] = max(dp[i][j], dp[i-1][j-i*k]-k);
            }
        }
        //cout << i << " " << dp[i][L-S+M*M] << "\n";
    }
    for (int i = M+1; i <= 2*M; i++) {
        for (int j = 0; j <= 2*M*M; j++) {
            dp[i][j] = -1e18;
            for (int k = 0; k <= arr[2*M-i]; k++) {
                if (j+i*k < 0) break;
                dp[i][j] = max(dp[i][j], dp[i-1][j+(i-M)*k]+k);
            }
            for (int k = 0; k <= rem[2*M-i]; k++) {
                if (j+i*k < 0) break;
                dp[i][j] = max(dp[i][j], dp[i-1][j+(i-M)*k]-k);
            }
        }
        //cout << i << " " << dp[i][L-S+M*M] << "\n";
    }

    if (dp[2*M][L-S+M*M] <= -1e17) cout << "impossible\n";
    else cout << ans + dp[2*M][L-S+M*M] << "\n";

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 16728 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 21 ms 80532 KB Output is correct
7 Correct 14 ms 80476 KB Output is correct
8 Correct 20 ms 80476 KB Output is correct
9 Correct 30 ms 80472 KB Output is correct
10 Correct 11 ms 80476 KB Output is correct
11 Correct 10 ms 80476 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 16728 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 21 ms 80532 KB Output is correct
7 Correct 14 ms 80476 KB Output is correct
8 Correct 20 ms 80476 KB Output is correct
9 Correct 30 ms 80472 KB Output is correct
10 Correct 11 ms 80476 KB Output is correct
11 Correct 10 ms 80476 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 22 ms 80496 KB Output is correct
18 Correct 14 ms 80476 KB Output is correct
19 Correct 23 ms 80336 KB Output is correct
20 Correct 34 ms 80376 KB Output is correct
21 Correct 11 ms 80476 KB Output is correct
22 Correct 10 ms 80336 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 230 ms 160416 KB Output is correct
25 Correct 87 ms 160640 KB Output is correct
26 Correct 398 ms 160544 KB Output is correct
27 Correct 386 ms 160592 KB Output is correct
28 Correct 35 ms 160592 KB Output is correct
29 Correct 28 ms 160604 KB Output is correct

Subtask #3-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Runtime error 57 ms 55496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #3-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Runtime error 57 ms 55496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Runtime error 57 ms 55496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 16728 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 21 ms 80532 KB Output is correct
7 Correct 14 ms 80476 KB Output is correct
8 Correct 20 ms 80476 KB Output is correct
9 Correct 30 ms 80472 KB Output is correct
10 Correct 11 ms 80476 KB Output is correct
11 Correct 10 ms 80476 KB Output is correct
12 Correct 2 ms 16728 KB Output is correct
13 Runtime error 57 ms 55496 KB Execution killed with signal 11
14 Halted 0 ms 0 KB -

Subtask #5-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Runtime error 57 ms 55496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 16728 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 21 ms 80532 KB Output is correct
7 Correct 14 ms 80476 KB Output is correct
8 Correct 20 ms 80476 KB Output is correct
9 Correct 30 ms 80472 KB Output is correct
10 Correct 11 ms 80476 KB Output is correct
11 Correct 10 ms 80476 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 22 ms 80496 KB Output is correct
18 Correct 14 ms 80476 KB Output is correct
19 Correct 23 ms 80336 KB Output is correct
20 Correct 34 ms 80376 KB Output is correct
21 Correct 11 ms 80476 KB Output is correct
22 Correct 10 ms 80336 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 230 ms 160416 KB Output is correct
25 Correct 87 ms 160640 KB Output is correct
26 Correct 398 ms 160544 KB Output is correct
27 Correct 386 ms 160592 KB Output is correct
28 Correct 35 ms 160592 KB Output is correct
29 Correct 28 ms 160604 KB Output is correct
30 Correct 2 ms 16728 KB Output is correct
31 Runtime error 57 ms 55496 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -

Subtask #6-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Runtime error 57 ms 55496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #6-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 16728 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 21 ms 80532 KB Output is correct
7 Correct 14 ms 80476 KB Output is correct
8 Correct 20 ms 80476 KB Output is correct
9 Correct 30 ms 80472 KB Output is correct
10 Correct 11 ms 80476 KB Output is correct
11 Correct 10 ms 80476 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 22 ms 80496 KB Output is correct
18 Correct 14 ms 80476 KB Output is correct
19 Correct 23 ms 80336 KB Output is correct
20 Correct 34 ms 80376 KB Output is correct
21 Correct 11 ms 80476 KB Output is correct
22 Correct 10 ms 80336 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 230 ms 160416 KB Output is correct
25 Correct 87 ms 160640 KB Output is correct
26 Correct 398 ms 160544 KB Output is correct
27 Correct 386 ms 160592 KB Output is correct
28 Correct 35 ms 160592 KB Output is correct
29 Correct 28 ms 160604 KB Output is correct
30 Correct 2 ms 16728 KB Output is correct
31 Runtime error 57 ms 55496 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -