#include <bits/stdc++.h>
#define ll long long
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define vll vector<ll>
#define bc back()
#define arr array
#define pll vector<pair<ll,ll>>
using namespace std;
template <class _T>
bool chmin(_T &x, const _T &y){
bool f=0;
if (x>y){x=y;f=1;}
return f;
}
template <class _T>
bool chmax(_T &x, const _T &y){
bool f=0;
if (x<y){x=y;f=1;}
return f;
}
//void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
}
const ll inf=1e18+7;
const ll mod=1e9+7;
const ll N=1e5+7;
const ld eps=1e-9;
void solve(){
ll i,j;
ll n,m;
cin>>n>>m;
ll orb[n][m],ingot[n][m];
char a[n][m];
for(i=0;i<n;i++){
for(j=0;j<m;j++)cin>>a[i][j];
for(j=m-1;j>=0;j--)orb[i][j]=(j<m-1 ? orb[i][j+1] : 0ll)+(a[i][j]=='O' ? 1 : 0);
}
for(j=0;j<m;j++){
for(i=n-1;i>=0;i--)ingot[i][j]=(i<n-1 ? ingot[i+1][j] : 0ll)+(a[i][j]=='I' ? 1 : 0);
}
ll ans=0;
for(i=0;i<n;i++){
for(j=0;j<m;j++){
if(a[i][j]=='J')ans+=orb[i][j]*ingot[i][j];
}
}
cout<<ans<<endl;
}
signed main(){
start();
ll t=1;
//cin>>t;
while(t--) solve();
return 0;
}
/*
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
600 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
856 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
600 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
856 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
6 ms |
3676 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
2732 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
6 ms |
4700 KB |
Output is correct |
19 |
Correct |
5 ms |
4444 KB |
Output is correct |
20 |
Correct |
6 ms |
4768 KB |
Output is correct |
21 |
Correct |
6 ms |
4700 KB |
Output is correct |
22 |
Correct |
7 ms |
4440 KB |
Output is correct |
23 |
Correct |
6 ms |
4700 KB |
Output is correct |
24 |
Correct |
7 ms |
4700 KB |
Output is correct |
25 |
Correct |
6 ms |
4560 KB |
Output is correct |
26 |
Correct |
6 ms |
4700 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
600 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
856 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
6 ms |
3676 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
2732 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
6 ms |
4700 KB |
Output is correct |
19 |
Correct |
5 ms |
4444 KB |
Output is correct |
20 |
Correct |
6 ms |
4768 KB |
Output is correct |
21 |
Correct |
6 ms |
4700 KB |
Output is correct |
22 |
Correct |
7 ms |
4440 KB |
Output is correct |
23 |
Correct |
6 ms |
4700 KB |
Output is correct |
24 |
Correct |
7 ms |
4700 KB |
Output is correct |
25 |
Correct |
6 ms |
4560 KB |
Output is correct |
26 |
Correct |
6 ms |
4700 KB |
Output is correct |
27 |
Correct |
279 ms |
149976 KB |
Output is correct |
28 |
Correct |
1 ms |
860 KB |
Output is correct |
29 |
Correct |
15 ms |
11848 KB |
Output is correct |
30 |
Correct |
1 ms |
604 KB |
Output is correct |
31 |
Correct |
199 ms |
110500 KB |
Output is correct |
32 |
Correct |
275 ms |
157816 KB |
Output is correct |
33 |
Correct |
278 ms |
158288 KB |
Output is correct |
34 |
Correct |
233 ms |
128080 KB |
Output is correct |
35 |
Correct |
278 ms |
157852 KB |
Output is correct |
36 |
Correct |
288 ms |
158284 KB |
Output is correct |
37 |
Correct |
305 ms |
158692 KB |
Output is correct |
38 |
Correct |
193 ms |
109652 KB |
Output is correct |
39 |
Correct |
184 ms |
109908 KB |
Output is correct |