Submission #260097

#	Time	Username	Problem	Language	Result	Execution time	Memory
260097		SamAnd	Wombats (IOI13_wombats)	C++17	55 / 100	20079 ms	60576 KiB

wombats

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization("unroll-loops","O3")
#include "wombats.h"
//#include "grader.h"
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define fi first
#define se second
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
const int N = 5003, M = 202, INF = 1000000009;

int n, m;
int h[N][N], v[N][N];

int ans[M][M];

int dp[N][M];
void clc()
{
    for (int f = 0; f < m; ++f)
    {
        for (int i = n - 1; i >= 0; --i)
        {
            if (i == n - 1)
            {
                for (int j = 0; j < m; ++j)
                {
                    if (j == f)
                        dp[i][j] = 0;
                    else
                        dp[i][j] = INF;
                }
            }
            else
            {
                for (int j = 0; j < m; ++j)
                {
                    dp[i][j] = dp[i + 1][j] + v[i][j];
                }
            }
            int minu = INF;
            for (int j = 0; j < m; ++j)
            {
                dp[i][j] = min(dp[i][j], minu);
                minu = min(minu, dp[i][j]);
                minu += h[i][j];
            }
            minu = INF;
            for (int j = m - 1; j >= 0; --j)
            {
                dp[i][j] = min(dp[i][j], minu);
                minu = min(minu, dp[i][j]);
                if (j)
                    minu += h[i][j - 1];
            }
        }
        for (int s = 0; s < m; ++s)
        {
            ans[s][f] = dp[0][s];
        }
    }
}

void init(int R, int C, int H[5000][200], int V[5000][200])
{
    n = R;
    m = C;
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m - 1; ++j)
        {
            h[i][j] = H[i][j];
        }
    }
    for (int i = 0; i < n - 1; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            v[i][j] = V[i][j];
        }
    }
    clc();
}

void changeH(int P, int Q, int W)
{
    h[P][Q] = W;
    clc();
}

void changeV(int P, int Q, int W)
{
    v[P][Q] = W;
    clc();
}

int escape(int V1, int V2)
{
    return ans[V1][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]
  int res;
      ^~~
wombats.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops","O3")

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