#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define FOR(i, a, b) for(int i = (int)a; i <= (int)b; i++)
#define DEC(i, a, b) for(int i = (int)a; i >= (int)b; i--)
typedef pair<int, int> pi;
typedef pair<pi, int> pii;
typedef pair<pi, pi> pipi;
#define f first
#define s second
typedef vector<int> vi;
typedef vector<pi> vpi;
typedef vector<pii> vpii;
#define pb push_back
#define pf push_front
#define all(v) v.begin(), v.end()
#define disc(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
#define INF (int) 1e9 + 100
#define LLINF (ll) 1e18
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define sandybridge __attribute__((optimize("Ofast"), target("arch=sandybridge")))
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); //can be used by calling rng() or shuffle(A, A+n, rng)
inline ll rand(ll x, ll y) { ++y; return (rng() % (y-x)) + x; } //inclusivesss
ll h, w, ans, row[3005][3005], col[3005][3005];
char grid[3005][3005];
int main() {
fastio; cin >> h >> w;
FOR(i, 1, h) FOR(j, 1, w) cin >> grid[i][j];
FOR(i, 1, h) DEC(j, w, 1) row[i][j] = row[i][j+1] + (grid[i][j] == 'O');
FOR(i, 1, w) DEC(j, h, 1) col[i][j] = col[i][j+1] + (grid[j][i] == 'I');
FOR(i, 1, h) FOR(j, 1, w) if (grid[i][j] == 'J') ans += row[i][j] * col[j][i];
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
2 ms |
1696 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1536 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
2 ms |
1696 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 14 |
Correct |
11 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
3 ms |
3456 KB |
Output is correct |
| 16 |
Correct |
7 ms |
6272 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 18 |
Correct |
14 ms |
9984 KB |
Output is correct |
| 19 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
12 ms |
9856 KB |
Output is correct |
| 21 |
Correct |
14 ms |
9984 KB |
Output is correct |
| 22 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 23 |
Correct |
13 ms |
9856 KB |
Output is correct |
| 24 |
Correct |
13 ms |
9984 KB |
Output is correct |
| 25 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 26 |
Correct |
12 ms |
9856 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
2 ms |
1696 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 14 |
Correct |
11 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
3 ms |
3456 KB |
Output is correct |
| 16 |
Correct |
7 ms |
6272 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1664 KB |
Output is correct |
| 18 |
Correct |
14 ms |
9984 KB |
Output is correct |
| 19 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 20 |
Correct |
12 ms |
9856 KB |
Output is correct |
| 21 |
Correct |
14 ms |
9984 KB |
Output is correct |
| 22 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 23 |
Correct |
13 ms |
9856 KB |
Output is correct |
| 24 |
Correct |
13 ms |
9984 KB |
Output is correct |
| 25 |
Correct |
12 ms |
9728 KB |
Output is correct |
| 26 |
Correct |
12 ms |
9856 KB |
Output is correct |
| 27 |
Correct |
384 ms |
154616 KB |
Output is correct |
| 28 |
Correct |
12 ms |
17024 KB |
Output is correct |
| 29 |
Correct |
32 ms |
22944 KB |
Output is correct |
| 30 |
Correct |
9 ms |
9984 KB |
Output is correct |
| 31 |
Correct |
289 ms |
131448 KB |
Output is correct |
| 32 |
Correct |
348 ms |
158584 KB |
Output is correct |
| 33 |
Correct |
350 ms |
158840 KB |
Output is correct |
| 34 |
Correct |
325 ms |
142972 KB |
Output is correct |
| 35 |
Correct |
363 ms |
158712 KB |
Output is correct |
| 36 |
Correct |
347 ms |
158840 KB |
Output is correct |
| 37 |
Correct |
400 ms |
159096 KB |
Output is correct |
| 38 |
Correct |
243 ms |
130556 KB |
Output is correct |
| 39 |
Correct |
246 ms |
131064 KB |
Output is correct |
