Submission #962276

# Submission time Handle Problem Language Result Execution time Memory
962276 2024-04-13T09:59:01 Z NValchanov Wombats (IOI13_wombats) C++17
Compilation error
0 ms 0 KB
#include <bits/stdc++.h>
#include "wombats.h"

using namespace std;
typedef long long int;

const int MAXN = 5000;
const int MAXM = 100;
const int INF = 4e18 + 10;

int n,m;
int hor[MAXN][MAXM];
int ver[MAXN][MAXM];
int dp[MAXN][MAXM][MAXM];
int ans_m1;

void init_dp(int src)
{
    for(int i = 0; i < n; i++)
    {
        for(int j = 0; j < m; j++)
        {
            dp[i][j][src] = INF;
        }
    }

    dp[0][src][src] = 0;

    for(int j = 1; j < m; j++)
    {
        dp[0][j][src] = min(dp[0][j][src], dp[0][j - 1][src] + hor[0][j - 1]);
    }

    for(int j = m - 2; j >= 0; j--)
    {
        dp[0][j][src] = min(dp[0][j][src], dp[0][j + 1][src] + hor[0][j]);
    }
}

void fiint_dp(int src)
{
    init_dp(src);

    for(int i = 1; i < n; i++)
    {
        for(int j = 0; j < m; j++)
        {
            dp[i][j][src] = min(dp[i][j][src], dp[i - 1][j][src] + ver[i - 1][j]);
        }
        for(int j = 1; j < m; j++)
        {
            dp[i][j][src] = min(dp[i][j][src], dp[i][j - 1][src] + hor[i][j - 1]);
        }
        for(int j = m - 2; j >= 0; j--)
        {
            dp[i][j][src] = min(dp[i][j][src], dp[i][j + 1][src] + hor[i][j]);
        }
    }
}

void calc()
{
    for(int src = 0; src < m; src++)
    {
        fiint_dp(src);
    }
}

void init(int R, int C, int H[5000][200], int V[5000][200])
{
    n = R;
    m = C;

    ans_m1 = 0;

    for(int i = 0; i < n; i++)
    {
        for(int j = 0; j < m - 1; j++)
        {
            hor[i][j] = H[i][j];
        }
    }

    for(int i = 0; i < n - 1; i++)
    {
        for(int j = 0; j < m; j++)
        {
            ver[i][j] = V[i][j];
        }
    }

    if(m == 1)
    {
        for(int i = 0; i < n; i++)
        {
            ans_m1 += ver[i][0];
        }
    }

    calc();
}

void changeH(int i, int j, int w) /// change path from x;y to x;y + 1
{
    hor[i][j] = w;
    calc();
}

void changeV(int i, int j, int w) /// change path from x;y to x + 1;y
{
    if(m == 1)
    {
        ans_m1 += (w - ver[i][j]);
        ver[i][j] = w;
        return;
    }
    ver[i][j] = w;
    calc();
}

int escape(int from, int to) /// escape from (0;V1) to (N-1;V2)
{
    if(m == 1)
        return ans_m1;
    return dp[n - 1][to][from];
}

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;
      |      ^~~
wombats.cpp:5:19: error: declaration does not declare anything [-fpermissive]
    5 | typedef long long int;
      |                   ^~~
wombats.cpp:9:22: warning: overflow in conversion from 'double' to 'int' changes value from '4.0e+18' to '2147483647' [-Woverflow]
    9 | const int INF = 4e18 + 10;
      |                 ~~~~~^~~~