oj.uz

Submission #680000

# Submission time Handle Problem Language Result Execution time Memory
680000 2023-01-09T18:46:49 Z bashkort Wombats (IOI13_wombats) C++17
28 / 100
 1279 ms 31600 KB 
#include <bits/stdc++.h>
#include "wombats.h"

using namespace std;

inline bool ckmin(int &a, int b) {
    return (a > b) && (a = b, true);
}

constexpr int B = 100, R = 5000, C = 200, K = (R + B - 1) / B;

int r, c, need;
int dp[K][C][C], fr[K][C][C], H[R][C], V[R][C];

void update_dp(int L) {
    if (L == 0) {
        memcpy(dp[L], fr[L], sizeof(dp[L]));
        return;
    }
    memset(dp[L], 0x3f, sizeof(dp[L]));
    for (int cc = 0; cc < c; ++cc) {
        const int idx = L * B - 1;

        function<void(int, int, int, int)> solve = [&](int l, int r, int optl, int optr) {
            if (l >= r) {
                return;
            }

            int mid = (l + r) >> 1;

            int opt = optl;

            for (int b = optl; b <= optr; ++b) {
                if (ckmin(dp[L][cc][mid], dp[L - 1][cc][b] + V[idx][b] + fr[L][b][mid])) {
                    opt = b;
                }
            }

            solve(l, mid, optl, opt), solve(mid + 1, r, opt, optr);
        };
        solve(0, c, 0, c - 1);
    }

}

void update_fr(int L) {
    memset(fr[L], 0x3f, sizeof(fr[L]));
    for (int a = 0; a < c; ++a) {
        fr[L][a][a] = 0;
    }
    int lim = B * L;
    for (int i = min(r, B * (L + 1)) - 1; i >= lim; --i) {
        for (int a = 0; a < c - 1; ++a) {
            for (int cc = 0; cc < c; ++cc)
                ckmin(fr[L][a + 1][cc], fr[L][a][cc] + H[i][a]);
        }
        for (int a = c - 2; a >= 0; --a) {
            for (int cc = 0; cc < c; ++cc)
                ckmin(fr[L][a][cc], fr[L][a + 1][cc] + H[i][a]);
        }
        if (i != lim) {
            for (int cc = 0; cc < c; ++cc) {
                for (int a = 0; a < c; ++a) {
                    fr[L][a][cc] += V[i - 1][a];
                }
            }
        }
    }
}

void init(int R, int C, int H[5000][200], int V[5000][200]) {
    r = R, c = C;
    memcpy(::H, H, sizeof(::H)), memcpy(::V, V, sizeof(::V));

    need = (r + B - 1) / B;
    for (int i = need - 1; i >= 0; --i) {
        update_fr(i);
    }
    for (int i = need - 1; i >= 0; --i) {
        update_dp(i);
    }
}

void changeH(int P, int Q, int W) {
    H[P][Q] = W;

    int L = P / B;

    update_fr(L);

    for (int i = L; i < need; ++i) {
        update_dp(i);
    }
}

void changeV(int P, int Q, int W) {
    V[P][Q] = W;

    int L = P / B;

    if ((P + 1) % B != 0) {
        update_fr(L);
    }
    for (int i = L; i < need; ++i) {
        update_dp(i);
    }
}

int escape(int V1, int V2) {
    return dp[need - 1][V1][V2];
}

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 244 ms 27692 KB Output is correct
2 Incorrect 32 ms 27684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8404 KB Output is correct
2 Correct 5 ms 8404 KB Output is correct
3 Correct 5 ms 8364 KB Output is correct
4 Correct 5 ms 8404 KB Output is correct
5 Correct 5 ms 8404 KB Output is correct
6 Correct 5 ms 8400 KB Output is correct
7 Correct 6 ms 8404 KB Output is correct
8 Correct 5 ms 8404 KB Output is correct
9 Correct 5 ms 8404 KB Output is correct
10 Correct 5 ms 8404 KB Output is correct
11 Correct 67 ms 9480 KB Output is correct
12 Correct 5 ms 8404 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 8616 KB Output is correct
2 Correct 260 ms 8532 KB Output is correct
3 Correct 372 ms 8620 KB Output is correct
4 Correct 291 ms 8620 KB Output is correct
5 Correct 325 ms 8636 KB Output is correct
6 Correct 5 ms 8404 KB Output is correct
7 Correct 5 ms 8404 KB Output is correct
8 Correct 5 ms 8472 KB Output is correct
9 Correct 1279 ms 8584 KB Output is correct
10 Correct 4 ms 8404 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 32 ms 31524 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 286 ms 8632 KB Output is correct
2 Correct 261 ms 8624 KB Output is correct
3 Correct 307 ms 8652 KB Output is correct
4 Correct 294 ms 8688 KB Output is correct
5 Correct 288 ms 8628 KB Output is correct
6 Incorrect 45 ms 31572 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 292 ms 8720 KB Output is correct
2 Correct 256 ms 8636 KB Output is correct
3 Correct 311 ms 8644 KB Output is correct
4 Correct 330 ms 8532 KB Output is correct
5 Correct 287 ms 8620 KB Output is correct
6 Incorrect 40 ms 31600 KB Output isn't correct
7 Halted 0 ms 0 KB -