Submission #716346

#	Time	Username	Problem	Language	Result	Execution time	Memory
716346		ovidiush11	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	240 ms	332 KiB

joi2019_ho_t1

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

#define ll long long

int main()
{
    ll n,m,ans = 0;
    cin>>n>>m;
    ll a[m] = {0};
    for(ll i = 0;i < n;i++)
    {
        string s;
        cin>>s;
        ll k = 0;
        for(ll j = m-1;j >= 0;j--)
        {
            if(s[j] == 'O')k++;
            else if(s[j] == 'J')a[j] += k;
            else ans += a[j];
        }
    }
    cout<<ans;
    return 0;
}

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