Submission #1083255

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083255		Dennis_Jason	Dango Maker (JOI18_dango_maker)	C++14	100 / 100	312 ms	174240 KiB

dango_maker

#include <bits/stdc++.h>
#define NMAX 2005
#define pb push_back
#define eb emplace_back
#define MOD 100003
#define nl '\n'
#define LLONG_MAX 9223372036854775807
#define pii pair<int,int>
#define tpl tuple<int,int,int>
//#pragma GCC optimize("O3")
#define INF 2147483647
using namespace std;
ifstream fin("aib.in");
ofstream fout("aib.out");
/*
 *
 *
    ================DEMONSTRATION===================
    5 5
    RGRGW
    GRRGW
    WGGWR
    RWRGW
    RGWGW


    =====================END========================
 */
int n,m;
int mat[3005][3005];
vector<pii>indR;
int rgw[]={0,1,2,3};
int hor(int i,int j)
{
    return (mat[i][j-1]==1 && mat[i][j]==2 && mat[i][j+1]==3);
}
int ver(int i,int j)
{
    return (mat[i-1][j]==1 && mat[i][j]==2 && mat[i+1][j]==3);
}
int dp[3][3005][3005];
signed main() {

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin>>n>>m;
    for(int i=1;i<=n;++i)
    {
        for(int j=1;j<=m;++j)
        {
            char x;
            cin>>x;
            if(x=='R')
            {
                indR.pb({i,j});
                mat[i][j]=1;
            }
            else if(x=='G')
            {
                mat[i][j]=2;
            }
            else
                mat[i][j]=3;
        }
    }
    for(int i=1;i<=n;++i)
    {
        for(int j=1;j<=m;++j)
        {
            dp[0][i][j]=max({dp[0][i-1][j+1],dp[1][i-1][j+1],dp[2][i-1][j+1]});
            dp[1][i][j]=max(dp[0][i-1][j+1],dp[1][i-1][j+1])+hor(i,j);
            dp[2][i][j]=max(dp[0][i-1][j+1],dp[2][i-1][j+1])+ver(i,j);
        }
    }
    int ans=0;
    for(int i=1;i<=n;++i)
    {
        ans+=max({dp[0][i][1],dp[1][i][1],dp[2][i][1]});
    }
    for(int i=2;i<=m;++i)
    {
        ans+=max({dp[0][n][i],dp[1][n][i],dp[2][n][i]});
    }
    cout<<ans;

    return 0;
}

Compilation message (stderr)

dango_maker.cpp:7: warning: "LLONG_MAX" redefined
    7 | #define LLONG_MAX 9223372036854775807
      | 
In file included from /usr/lib/gcc/x86_64-linux-gnu/10/include/limits.h:195,
                 from /usr/lib/gcc/x86_64-linux-gnu/10/include/syslimits.h:7,
                 from /usr/lib/gcc/x86_64-linux-gnu/10/include/limits.h:34,
                 from /usr/include/c++/10/climits:42,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:39,
                 from dango_maker.cpp:1:
/usr/include/limits.h:135: note: this is the location of the previous definition
  135 | #  define LLONG_MAX __LONG_LONG_MAX__
      |

• Subtask 1: 13 / 13
• Subtask 2: 20 / 20
• Subtask 3: 67 / 67