Submission #298638

#	Time	Username	Problem	Language	Result	Execution time	Memory
298638		emil_physmath	Wombats (IOI13_wombats)	C++17	55 / 100	20071 ms	215544 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;
const int maxN = 5000;
const int maxM = 100;

int n, m;
int h[5000][200], v[5000][200];
int dp[maxM][maxN][maxM];

void Mini(auto& l, auto r) { l = min(l, r); }
void Build()
{
    for (int s = 0; s < m; ++s)
    {
        int (*dp)[maxM] = ::dp[s];
        dp[0][s] = 0;
        for (int j = s + 1; j < m; ++j)
            dp[0][j] = dp[0][j - 1] + h[0][j - 1];
        for (int j = s - 1; j >= 0; --j)
            dp[0][j] = dp[0][j + 1] + h[0][j];
        for (int i = 1; i < n; ++i)
        {
            for (int j = 0; j < m; ++j)
                dp[i][j] = dp[i - 1][j] + v[i - 1][j];
            for (int j = 1; j < m; ++j)
                Mini(dp[i][j], dp[i][j - 1] + h[i][j - 1]);
            for (int j = m - 2; j >= 0; --j)
                Mini(dp[i][j], dp[i][j + 1] + h[i][j]);
        }
    }
}

void init(int R, int C, int H[5000][200], int V[5000][200]) {
    if (C <= 2);
    else if (min(R, C) <= 100);
    else exit(0);
    n = R, m = C;
    for (int i = 0; i < 5000; ++i)
        for (int j = 0; j < 200; ++j)
            h[i][j] = H[i][j], v[i][j] = V[i][j];
    Build();
}

void changeH(int x, int y, int w) {
    h[x][y] = w;
    Build();
}

void changeV(int x, int y, int w) {
    v[x][y] = w;
    Build();
}

int escape(int v1, int v2) {
    return dp[v1][n - 1][v2];
}

Compilation message (stderr)

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:11:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts'
   11 | void Mini(auto& l, auto r) { l = min(l, r); }
      |           ^~~~
wombats.cpp:11:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts'
   11 | void Mini(auto& l, auto r) { l = min(l, r); }
      |                    ^~~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24