Submission #962328

#	Time	Username	Problem	Language	Result	Execution time	Memory
962328		simona1230	Wombats (IOI13_wombats)	C++17	37 / 100	648 ms	262144 KiB

wombats

#include <bits/stdc++.h>
#include "wombats.h"
using namespace std;

int r,c,h[5001][201],v[5001][201];
int dp[5001][201][201];
bool subt2;
bool subt3;
int tot;
void init(int R,int C,int H[5000][200],int V[5000][200])
{
    r=R;
    c=C;
    for(int i=0; i<R; i++)
    {
        for(int j=0; j<C; j++)
        {
            h[i][j]=H[i][j];
            v[i][j]=V[i][j];
            tot+=h[i][j];
            tot+=v[i][j];
        }
    }
    if(r<=100&&c<=100||c==2)
        subt3=1;
    else if(c!=1)subt2=1;
    subt2=0;
    subt3=1;

    if(subt2)
    {
        //cout<<r<<" "<<c<<endl;
        for(int i=0; i<r; i++)
        {
            for(int j=0; j<c; j++)
            {
                for(int k=0; k<c; k++)
                {
                    dp[i][j][k]=1e9;
                }
                dp[0][j][j]=0;
            }
        }

        for(int k=0; k<c; k++)
            for(int i=0; i<r; i++)
            {
                for(int j=c-1; j>=0; j--)
                {
                    //cout<<dp[i][j][k]<<endl;
                    if(i>0)dp[i][j][k]=min(dp[i][j][k],dp[i-1][j][k]+v[i-1][j]);
                    if(j<c-1)dp[i][j][k]=min(dp[i][j][k],dp[i][j+1][k]+h[i][j]);
                }
                for(int j=0; j<c; j++)
                {
                    //cout<<dp[i][j][k]<<endl;
                    if(i>0)dp[i][j][k]=min(dp[i][j][k],dp[i-1][j][k]+v[i-1][j]);
                    if(j>0)dp[i][j][k]=min(dp[i][j][k],dp[i][j-1][k]+h[i][j-1]);
                    //cout<<i<<" "<<j<<" "<<k<<" "<<dp[i][j][k]<<endl;
                }
            }
    }
}

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

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

int escape(int x,int y)
{
    if(c==1)return tot;
    if(subt2)return dp[r-1][y][x];
        //cout<<x<<" --- "<<y<<endl;
        int k=x;
        for(int i=0; i<r; i++)
        {
            for(int j=0; j<c; j++)
            {
                dp[i][j][k]=1e9;
            }
        }
        dp[0][k][k]=0;
        for(int i=0; i<r; i++)
        {
            for(int j=c-1; j>=0; j--)
            {
                //cout<<dp[i][j][k]<<endl;
                if(i>0)dp[i][j][k]=min(dp[i][j][k],dp[i-1][j][k]+v[i-1][j]);
                if(j<c-1)dp[i][j][k]=min(dp[i][j][k],dp[i][j+1][k]+h[i][j]);
            }
            for(int j=0; j<c; j++)
            {
                //cout<<dp[i][j][k]<<endl;
                if(i>0)dp[i][j][k]=min(dp[i][j][k],dp[i-1][j][k]+v[i-1][j]);
                if(j>0)dp[i][j][k]=min(dp[i][j][k],dp[i][j-1][k]+h[i][j-1]);
                //cout<<i<<" "<<j<<" "<<k<<" "<<dp[i][j][k]<<endl;
            }
        }
        return dp[r-1][y][x];
}

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: In function 'void init(int, int, int (*)[200], int (*)[200])':
wombats.cpp:24:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   24 |     if(r<=100&&c<=100||c==2)
      |        ~~~~~~^~~~~~~~

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