#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<ll>;
using pl = pair<ll,ll>;
#define pb push_back
#define form(m,it) for(auto it=m.begin(); it!=m.end(); it++)
#define forp(i,a,b) for(ll i=a; i<=b; i++)
#define forn(i,a,b) for(ll i=a; i>=b; i--)
#define newl '\n'
#define ff first
#define ss second
const ll mod = 1000000007;
ll cr[3][3005][3005];
ll cc[3][3005][3005];
ll a[3005][3005];
void solve(){
ll h,w; cin>>h>>w;
forp(i,1,h){
forp(j,1,w){
cin>>c;
if(c=='J'){
a[i][j]=0;
}
if(c=='O'){
a[i][j]=1;
}
if(c=='I'){
a[i][j]=2;
}
}
}
forp(i,1,h){
forp(j,1,w){
forp(k,0,2){
cr[k][i][j]=cr[k][i][j-1]+(a[i][j]==k);
}
}
}
forp(i,1,h){
forp(j,1,w){
forp(k,0,2){
cc[k][i][j]=cc[k][i-1][j]+(a[i][j]==k);
}
}
}
ll ans=0;
forp(i,1,h){
forp(j,1,w){
if(a[i][j]==0){
ans+=(cr[1][i][w]-cr[1][i][j-1])*(cc[2][h][j]-cc[2][i-1][j]);
}
}
}
cout<<ans<<newl;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int t=1; //cin>>t;
while(t--)solve();
}
Compilation message
joi2019_ho_t1.cpp: In function 'void solve()':
joi2019_ho_t1.cpp:22:18: error: 'c' was not declared in this scope
22 | cin>>c;
| ^
