Submission #1024593

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024593		toast12	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	233 ms	18112 KiB

joi2019_ho_t1

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

using ll = long long;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    int h, w;
    cin >> h >> w;
    vector<vector<char>> grid(h+1, vector<char>(w+1));
    vector<int> orb(h+1), ingot(w+1);
    for (int i = 1; i <= h; i++) {
        for (int j = 1; j <= w; j++) {
            cin >> grid[i][j];
            if (grid[i][j] == 'O')
                orb[i]++;
            else if (grid[i][j] == 'I')
                ingot[j]++;
        }
    }
    ll ans = 0;
    for (int i = 1; i <= h; i++) {
        for (int j = 1; j <= w; j++) {
            if (grid[i][j] == 'J')
                ans += 1ll*orb[i]*ingot[j];
            else if (grid[i][j] == 'O')
                orb[i]--;
            else
                ingot[j]--;
        }
    }
    cout << ans << '\n';
    return 0;
}

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