#include <bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
*/
using namespace std;
// using namespace __gnu_pbds;
using namespace chrono;
// mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
/*
template <class T> using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;
*/
//***************** CONSTANTS *****************
//***************** GLOBAL VARIABLES *****************
//***************** AUXILIARY STRUCTS *****************
//***************** MAIN BODY *****************
void solve(){
int H, W;
cin >> H >> W;
int grid[H][W];
for(int i = 0; i < H; i++){
for(int j = 0; j < W; j++){
char x;
cin >> x;
if(x == 'J') grid[i][j] = 1;
if(x == 'I') grid[i][j] = 2;
if(x == 'O') grid[i][j] = 3;
}
}
int orb[H][W], ingot[H][W];
memset(orb, 0, sizeof orb);
memset(ingot, 0, sizeof ingot);
int64_t ans = 0;
for(int i = H - 1; i >= 0; --i){
for(int j = W - 1; j >= 0; --j){
orb[i][j] = (grid[i][j] == 3);
ingot[i][j] = (grid[i][j] == 2);
if(j < W - 1) orb[i][j] += orb[i][j+1];
if(i < H - 1) ingot[i][j] += ingot[i+1][j];
if(grid[i][j] == 1)
ans += orb[i][j] * 1LL * ingot[i][j];
}
}
cout << ans << '\n';
}
//***************** *****************
int32_t main(){
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
#ifdef LOCAL
auto begin = high_resolution_clock::now();
#endif
int tc = 1;
// cin >> tc;
for (int t = 0; t < tc; t++)
solve();
#ifdef LOCAL
auto end = high_resolution_clock::now();
cout << fixed << setprecision(4);
cout << "Execution Time: " << duration_cast<duration<double>>(end - begin).count() << "seconds" << endl;
#endif
return 0;
}
/*
If code gives a WA, check for the following :
1. I/O format
2. Are you clearing all global variables in between tests if multitests are a thing
3. Can you definitively prove the logic
*/
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
308 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
328 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
308 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
328 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
8 ms |
2636 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
4 ms |
1868 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
10 ms |
3448 KB |
Output is correct |
| 19 |
Correct |
9 ms |
3276 KB |
Output is correct |
| 20 |
Correct |
7 ms |
3332 KB |
Output is correct |
| 21 |
Correct |
10 ms |
3488 KB |
Output is correct |
| 22 |
Correct |
8 ms |
3276 KB |
Output is correct |
| 23 |
Correct |
7 ms |
3404 KB |
Output is correct |
| 24 |
Correct |
10 ms |
3368 KB |
Output is correct |
| 25 |
Correct |
7 ms |
3276 KB |
Output is correct |
| 26 |
Correct |
6 ms |
3404 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
308 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
328 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
8 ms |
2636 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
4 ms |
1868 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
10 ms |
3448 KB |
Output is correct |
| 19 |
Correct |
9 ms |
3276 KB |
Output is correct |
| 20 |
Correct |
7 ms |
3332 KB |
Output is correct |
| 21 |
Correct |
10 ms |
3488 KB |
Output is correct |
| 22 |
Correct |
8 ms |
3276 KB |
Output is correct |
| 23 |
Correct |
7 ms |
3404 KB |
Output is correct |
| 24 |
Correct |
10 ms |
3368 KB |
Output is correct |
| 25 |
Correct |
7 ms |
3276 KB |
Output is correct |
| 26 |
Correct |
6 ms |
3404 KB |
Output is correct |
| 27 |
Correct |
326 ms |
108292 KB |
Output is correct |
| 28 |
Correct |
1 ms |
588 KB |
Output is correct |
| 29 |
Correct |
17 ms |
8476 KB |
Output is correct |
| 30 |
Correct |
1 ms |
588 KB |
Output is correct |
| 31 |
Correct |
238 ms |
79776 KB |
Output is correct |
| 32 |
Correct |
261 ms |
113884 KB |
Output is correct |
| 33 |
Correct |
233 ms |
114384 KB |
Output is correct |
| 34 |
Correct |
271 ms |
92408 KB |
Output is correct |
| 35 |
Correct |
279 ms |
113984 KB |
Output is correct |
| 36 |
Correct |
228 ms |
114368 KB |
Output is correct |
| 37 |
Correct |
339 ms |
114788 KB |
Output is correct |
| 38 |
Correct |
172 ms |
79076 KB |
Output is correct |
| 39 |
Correct |
156 ms |
79428 KB |
Output is correct |
