#include <bits/stdc++.h>
#define int long long
#define ll long long
#define fi first
#define se second
#define ve vector
#define all(x) x.begin(), x.end()
using namespace std;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
#pragma GCC optimize("O3")
signed main(){
int n, m;
cin >> n >> m;
ve<string> v(n);
for(auto& i : v)
cin >> i;
/* for(auto i : v) */
/* cout << i << endl; */
ve<ve<int> > os(n, ve<int>(m, 0)), is(n, ve<int>(m, 0));
for(int i = 0; i < n; i++){
os[i][m - 1] = v[i][m - 1] == 'O';
for(int j = m - 2; j >= 0; j--)
os[i][j] = os[i][j + 1] + int(v[i][j] == 'O');
}
for(int j = 0; j < m; j++){
is[n - 1][j] = v[n - 1][j] == 'I';
for(int i = n - 2; i >= 0; i--)
is[i][j] = is[i + 1][j] + int(v[i][j] == 'I');
}
ll res = 0;
for(int i = 0; i < n; i++)
for(int j = 0; j < n; j++)
if(v[i][j] == 'J')
res += os[i][j]*is[i][j];
cout << res;
}
Compilation message
joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:3:13: error: expected primary-expression before 'long'
3 | #define int long long
| ^~~~
joi2019_ho_t1.cpp:29:39: note: in expansion of macro 'int'
29 | os[i][j] = os[i][j + 1] + int(v[i][j] == 'O');
| ^~~
joi2019_ho_t1.cpp:3:13: error: expected primary-expression before 'long'
3 | #define int long long
| ^~~~
joi2019_ho_t1.cpp:34:39: note: in expansion of macro 'int'
34 | is[i][j] = is[i + 1][j] + int(v[i][j] == 'I');
| ^~~
