Tontti

#include <iostream>
using namespace std;
#define D 0
int main(){
 int n,m,X;
 cin>>n>>m>>X;
 char k[n][m];
 for(int y=0;y<n;y++){
  for(int x=0;x<m;x++){
   char c;
   cin>>c;
   k[y][x]=(c=='*')?1:0;
#if D
   cout<<int(k[y][x]);
#endif
  }
#if D
  cout<<endl;
#endif
 }
 int T=0;
 for(int I=0;I<m;I++){
  int mx=min(n+I,m);
  int p=0;
  for(int x=I,y=0,w=1;x+w<=mx;w++){
   for(int i=x;i<x+w;i++)p+=k[y+w-1][i];
   for(int i=y;i<y+w-1;i++)p+=k[i][x+w-1];
#if D
   cout<<x<<' '<<y<<' '<<w<<' '<<p<<endl;
#endif
   while(p>X){
    for(int i=x;i<x+w;i++)p-=k[y][i];
    for(int i=y+1;i<y+w;i++)p-=k[i][x];
    x++;y++;w--;
#if D
    cout<<x<<' '<<y<<' '<<w<<' '<<p<<endl;
#endif
   }
   if(p==X){
    int x_=x,y_=y,w_=w,p_=p;
    while(p_==X){
     T++;
     for(int i=x_;i<x_+w_;i++)p_-=k[y_][i];
     for(int i=y_+1;i<y_+w_;i++)p_-=k[i][x_];
     x_++;y_++;w_--;
#if D
     cout<<x_<<' '<<y_<<' '<<w_<<' '<<p_<<endl;
#endif
    }
   }
  }
  if(p==X)T++;
 }
 for(int I=1;I<m;I++){
  int my=min(n,m+I);
  int p=0;
  for(int y=I,x=0,w=1;y+w<=my;w++){
   for(int i=x;i<x+w;i++)p+=k[y+w-1][i];
   for(int i=y;i<y+w-1;i++)p+=k[i][x+w-1];
#if D
   cout<<x<<' '<<y<<' '<<w<<' '<<p<<endl;
#endif
   while(p>X){
    for(int i=x;i<x+w;i++)p-=k[y][i];
    for(int i=y+1;i<y+w;i++)p-=k[i][x];
    x++;y++;w--;
#if D
    cout<<x<<' '<<y<<' '<<w<<' '<<p<<endl;
#endif
   }
   if(p==X){
    int x_=x,y_=y,w_=w,p_=p;
    while(p_==X){
     T++;
     for(int i=x_;i<x_+w_;i++)p_-=k[y_][i];
     for(int i=y_+1;i<y_+w_;i++)p_-=k[i][x_];
     x_++;y_++;w_--;
#if D
     cout<<x_<<' '<<y_<<' '<<w_<<' '<<p_<<endl;
#endif
    }
   }
  }
 }
 cout<<T<<endl;
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: WRONG ANSWER

Test 5

Group: 1

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED