Submission #493735

#	Time	Username	Problem	Language	Result	Execution time	Memory
493735		watoKE	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	423 ms	55672 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;

ll t,n,a,b,cvp,dgr;
int dizi[3005][3005];
string s[3005];
int o,iler;

int main()
{
    cin>>a>>b;
    for (int i=1;i<=a;i++)
    {
        cin>>s[i];
        o=0;
        for (int j=b-1;j>=0;j--)
        {
            if (s[i][j]=='O')
                o++;
            if (s[i][j]=='J')
                dizi[i][j]=o;
        }
    }
    for (int i=0;i<b;i++)
    {
        iler=0;
        for (int j=a;j>=0;j--)
        {
            if (s[j][i]=='I')
                iler++;
            if (s[j][i]=='J')
                cvp+=dizi[j][i]*iler;
        }
    }

    cout<<cvp;
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50