Submission #1099366

#TimeUsernameProblemLanguageResultExecution timeMemory
1099366andreiqwerBitaro the Brave (JOI19_ho_t1)C++17
50 / 100
1076 ms9044 KiB
#include <iostream>

using namespace std;

int h, w;
long long cntfin;
int ocnts[3001];
char s[3001][3001];
int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    cin>>h>>w;
    for(int i=1; i<=h; i++)
    {
        for(int j=1; j<=w; j++)
        {
            cin>>s[i][j];
            if(s[i][j]=='O')
                ocnts[i]++;
        }

    }

    for(int i=1; i<=h; i++)
    {
        for(int j=1; j<=w; j++)
        {
            if(s[i][j]=='O')
                ocnts[i]--;
            if(s[i][j]=='J')
            {
                int icnt=0;
                for(int k=i+1; k<=h; k++)
                {
                    if(s[k][j]=='I')
                        icnt++;
                }

                cntfin+=ocnts[i]*icnt;
            }
        }
    }

    cout<<cntfin;
}
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