oj.uz

Submission #156760

# Submission time Handle Problem Language Result Execution time Memory
156760 2019-10-07T10:08:23 Z Alexa2001 Wombats (IOI13_wombats) C++17
76 / 100
 20000 ms 42348 KB 
#include "wombats.h"
#include <bits/stdc++.h>

using namespace std;

const int B = 100, Cmax = 205, Rmax = 5005;
const int inf = 1e8;

int N, M, rm;
int h[Rmax][Cmax], v[Rmax][Cmax];


static void min_to(int &x, int y) { if(x > y) x = y ;}

static void rec(int a[], int p)
{
    int i;
    for(i=1; i<M; ++i)
        min_to(a[i], a[i-1] + h[p][i-1]);

    for(i=M-2; i>=0; --i)
        min_to(a[i], a[i+1] + h[p][i]);
}

struct matrix
{
    int a[Cmax][Cmax];

    void combine(matrix &A, matrix &B, int pos)
    {
        int i, j, k;

        for(i=0; i<M; ++i)
            for(j=0; j<M; ++j)
            {
                a[i][j] = inf;
                for(k=0; k<M; ++k)
                    min_to(a[i][j], A.a[i][k] + B.a[k][j] + v[pos][k]);
            }
    }

    void refresh(int bucket)
    {
        int i, j, k;

        for(i=0; i<M; ++i)
        {
            for(j=0; j<M; ++j)
                a[i][j] = (i==j ? 0 : inf);

            for(k = bucket * B; k < (bucket+1) * B && k < N; ++k)
            {
                rec(a[i], k);

                if(k + 1 < min(B * (bucket+1), N))
                    for(j=0; j<M; ++j)
                        a[i][j] += v[k][j];
            }
        }
    }
};


#define left_son (node<<1)
#define right_son ((node<<1)|1)
#define mid ((st+dr)>>1)

namespace aint
{
    matrix a[ (Rmax / B + 3) << 2];

    void update(int node, int st, int dr, int pos)
    {
        if(st == dr)
        {
            a[node].refresh(st);
            return;
        }

        if(pos <= mid) update(left_son, st, mid, pos);
            else update(right_son, mid+1, dr, pos);

        a[node].combine(a[left_son], a[right_son], (mid+1) * B - 1);
    }

    void build(int node, int st, int dr)
    {
        if(st == dr)
        {
            a[node].refresh(st);
            return;
        }

        build(left_son, st, mid);
        build(right_son, mid+1, dr);

        a[node].combine(a[left_son], a[right_son], (mid+1) * B - 1);
    }

    int get_answer(int start, int finish)
    {
        return a[1].a[start][finish];
    }
};


void init(int R, int C, int H[5000][200], int V[5000][200])
{
    N = R; M = C;
    rm = (N-1) / B;

    int i, j;
    for(i=0; i<N; ++i)
        for(j=0; j<M; ++j)
            h[i][j] = H[i][j], v[i][j] = V[i][j];

    aint::build(1, 0, rm);
}

void changeH(int P, int Q, int W)
{
    h[P][Q] = W;
    aint::update(1, 0, rm, P / B);
}

void changeV(int P, int Q, int W)
{
    v[P][Q] = W;
    aint::update(1, 0, rm, P / B);
}

int escape(int V1, int V2)
{
    return aint::get_answer(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]
  int res;
      ^~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12664 KB Output is correct
2 Correct 14 ms 12716 KB Output is correct
3 Correct 84 ms 15480 KB Output is correct
4 Correct 14 ms 12664 KB Output is correct
5 Correct 14 ms 12792 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 81 ms 1440 KB Output is correct
12 Correct 2 ms 504 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 905 ms 816 KB Output is correct
2 Correct 466 ms 888 KB Output is correct
3 Correct 925 ms 888 KB Output is correct
4 Correct 910 ms 792 KB Output is correct
5 Correct 892 ms 760 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2795 ms 860 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16760 KB Output is correct
2 Correct 17 ms 16760 KB Output is correct
3 Correct 19 ms 16760 KB Output is correct
4 Correct 57 ms 18168 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 906 ms 792 KB Output is correct
2 Correct 461 ms 792 KB Output is correct
3 Correct 913 ms 860 KB Output is correct
4 Correct 897 ms 792 KB Output is correct
5 Correct 892 ms 792 KB Output is correct
6 Correct 18 ms 16632 KB Output is correct
7 Correct 18 ms 16760 KB Output is correct
8 Correct 19 ms 16764 KB Output is correct
9 Correct 56 ms 18244 KB Output is correct
10 Correct 14 ms 12664 KB Output is correct
11 Correct 14 ms 12792 KB Output is correct
12 Correct 85 ms 15608 KB Output is correct
13 Correct 14 ms 12792 KB Output is correct
14 Correct 14 ms 12664 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 0 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 83 ms 2800 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 2824 ms 888 KB Output is correct
28 Correct 7431 ms 28868 KB Output is correct
29 Correct 9158 ms 24400 KB Output is correct
30 Correct 8496 ms 24288 KB Output is correct
31 Correct 7947 ms 30488 KB Output is correct
32 Correct 2 ms 376 KB Output is correct

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 901 ms 792 KB Output is correct
2 Correct 464 ms 784 KB Output is correct
3 Correct 921 ms 796 KB Output is correct
4 Correct 898 ms 796 KB Output is correct
5 Correct 891 ms 788 KB Output is correct
6 Correct 18 ms 16632 KB Output is correct
7 Correct 17 ms 16888 KB Output is correct
8 Correct 18 ms 16760 KB Output is correct
9 Correct 56 ms 18132 KB Output is correct
10 Correct 14 ms 12664 KB Output is correct
11 Correct 14 ms 12756 KB Output is correct
12 Correct 87 ms 15608 KB Output is correct
13 Correct 14 ms 12664 KB Output is correct
14 Correct 14 ms 12792 KB Output is correct
15 Correct 1767 ms 42348 KB Output is correct
16 Execution timed out 20069 ms 41564 KB Time limit exceeded
17 Halted 0 ms 0 KB -