#include <bits/stdc++.h>
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define mid ((x + y) / 2)
#define left (ind * 2)
#define right (ind * 2 + 1)
#define mp make_pair
#define timer ((double)clock() / CLOCKS_PER_SEC)
#define endl "\n"
#define spc " "
#define d1(x) cerr<<#x<<":"<<x<<endl
#define d2(x, y) cerr<<#x<<":"<<x<<" "<<#y<<":"<<y<<endl
#define d3(x, y, z) cerr<<#x<<":"<<x<<" "<<#y<<":"<<y<<" "<<#z<<":"<<z<<endl
#define fast_io() ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
using namespace std;
typedef long long int lli;
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<double, double> dd;
const int N = (int)(3e3 + 5);
const int LOG = (int)(20);
int n, m, O[N][N], I[N][N];
char s[N][N];
lli ans;
int main() {
fast_io();
// freopen("inp.in", "r", stdin);
cin >> n >> m;
for(int i = 1; i <= n; i++)
cin >> s[i] + 1;
for(int i = 1; i <= n; i++)
for(int j = m; j >= 1; j--)
O[i][j] = O[i][j + 1] + (s[i][j] == 'O');
for(int i = 1; i <= m; i++)
for(int j = n; j >= 1; j--)
I[j][i] = I[j + 1][i] + (s[j][i] == 'I');
for(int i = 1; i <= n; i++)
for(int j = 1; j <= m; j++)
if(s[i][j] == 'J')
ans += O[i][j] * I[i][j];
cout << ans;
}
Compilation message
joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:37:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
cin >> s[i] + 1;
~~~~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7288 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4220 KB |
Output is correct |
| 17 |
Correct |
2 ms |
504 KB |
Output is correct |
| 18 |
Correct |
11 ms |
7800 KB |
Output is correct |
| 19 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 20 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 21 |
Correct |
12 ms |
7800 KB |
Output is correct |
| 22 |
Correct |
10 ms |
7672 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7672 KB |
Output is correct |
| 24 |
Correct |
12 ms |
7804 KB |
Output is correct |
| 25 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7672 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7288 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4220 KB |
Output is correct |
| 17 |
Correct |
2 ms |
504 KB |
Output is correct |
| 18 |
Correct |
11 ms |
7800 KB |
Output is correct |
| 19 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 20 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 21 |
Correct |
12 ms |
7800 KB |
Output is correct |
| 22 |
Correct |
10 ms |
7672 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7672 KB |
Output is correct |
| 24 |
Correct |
12 ms |
7804 KB |
Output is correct |
| 25 |
Correct |
11 ms |
7672 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7672 KB |
Output is correct |
| 27 |
Correct |
354 ms |
79916 KB |
Output is correct |
| 28 |
Correct |
26 ms |
26104 KB |
Output is correct |
| 29 |
Correct |
13 ms |
7288 KB |
Output is correct |
| 30 |
Correct |
2 ms |
632 KB |
Output is correct |
| 31 |
Correct |
264 ms |
66516 KB |
Output is correct |
| 32 |
Correct |
333 ms |
79776 KB |
Output is correct |
| 33 |
Correct |
329 ms |
79480 KB |
Output is correct |
| 34 |
Correct |
311 ms |
77176 KB |
Output is correct |
| 35 |
Correct |
337 ms |
79864 KB |
Output is correct |
| 36 |
Correct |
334 ms |
79424 KB |
Output is correct |
| 37 |
Correct |
387 ms |
79996 KB |
Output is correct |
| 38 |
Correct |
238 ms |
66560 KB |
Output is correct |
| 39 |
Correct |
241 ms |
66296 KB |
Output is correct |
