Submission #200254

#	Time	Username	Problem	Language	Result	Execution time	Memory
200254		mdn2002	Dango Maker (JOI18_dango_maker)	C++14	Compilation error	0 ms	0 KiB

dango_maker

#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+7;
int n,m,tk[3030][3030],ans;
char a[3030][3030];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("dec.in","r",stdin);
    //freopen("dec.out","w",stdout);
    cin>>n>>m;
    for(int i=0; i<n; i++)cin>>a[i];
    for(int i=0; i<n; i++)
    {
        for(int j=0; j<m; j++)
        {
            if(a[i][j]=='R'&&a[i+1][j]=='G'&&a[i+2][j]=='W'&&tk[i][j]+tk[i+1][j]+tk[i+2][j]==0)
            {
                if(a[i+1][j-1]=='R'&&a[i+1][j+1]=='W'&&a[i+2][j-2]=='R'&&a[i+2][j-1]=='G')num++;
                else
                {
                    ans++;
                    tk[i][j]++;
                    tk[i+1][j]++;
                    tk[i+2][j]++;
                }
            }
            if(a[i][j]=='R'&&a[i][j+1]=='G'&&a[i][j+2]=='W'&&tk[i][j]+tk[i][j+1]+tk[i][j+2]==0)
            {
                ans++;
                tk[i][j]++;
                tk[i][j+1]++;
                tk[i][j+2]++;
            }
        }
    }
    cout<<ans;
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:21:91: error: 'num' was not declared in this scope
                 if(a[i+1][j-1]=='R'&&a[i+1][j+1]=='W'&&a[i+2][j-2]=='R'&&a[i+2][j-1]=='G')num++;
                                                                                           ^~~
dango_maker.cpp:21:91: note: suggested alternative: 'enum'
                 if(a[i+1][j-1]=='R'&&a[i+1][j+1]=='W'&&a[i+2][j-2]=='R'&&a[i+2][j-1]=='G')num++;
                                                                                           ^~~
                                                                                           enum