Submission #788244

#	Time	Username	Problem	Language	Result	Execution time	Memory
788244		12345678	Bitaro the Brave (JOI19_ho_t1)	C++17	0 / 100	1 ms	328 KiB

joi2019_ho_t1

#include <bits/stdc++.h>

using namespace std;

const int nx=3e3+100;
long long h, w, dpr[nx], dpc[nx];
long long ans;
char c;
vector<pair<int, int>> v;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>h>>w;
    for (int i=1; i<=h; i++)
    {
        for (int j=1; j<=w; j++)
        {
            cin>>c;
            if (c=='J') v.push_back({i, j});
            if (c=='O') dpr[i]++;
            if (c=='I') dpc[j]++;
        }
    }
    for (auto [x, y]:v) ans+=dpr[y]*dpc[x];
    cout<<ans;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50