Lehmät

input/code.cpp: In function 'void dfs(int, int)':
input/code.cpp:13:5: error: 'i' was not declared in this scope
   13 | vis[i][j]=1;
      |     ^
input/code.cpp:13:8: error: 'j' was not declared in this scope
   13 | vis[i][j]=1;
      |        ^
input/code.cpp:24:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   24 | int main(){
      |         ^~
input/code.cpp:24:9: note: remove parentheses to default-initialize a variable
   24 | int main(){
      |         ^~
      |         --
input/code.cpp:24:9: note: or replace parentheses with braces to value-initialize a variable
input/code.cpp:24:11: error: a function-definition is not allowed here before '{' token
   24 | int main(){
      |           ^
input/code.cpp:43:2: error: expected '}' at end of input
   43 | }
      |  ^
input/code.cpp:12:23: note: to match this '{'
   12 | void dfs(int x, int y){
      |                       ^

#include<bits/stdc++.h>
using namespace std;
typedef long long ll; 
 
 
int n, m, cnt=0, cnt2=0;
vector<vector<char>>g; 
int vis[100][100]; 
int hori[]={1,-1,0,0}, vert[]={0,0,1,-1};
 
 
void dfs(int x, int y){
vis[i][j]=1; 
for(int i=0; i<4; ++i){
		int dx=x+hori[i], dy=y+vert[i]; 
		if(g[x][y]=='@'){
			cnt2++;
		if(0<=dx && dx<n && 0<=dy && dy< m && !vis[dx][dy]) dfs(dx, dy); 
	}
cout << cnt2 << "\n"; 
}
 
 
int main(){
cin>>n>>m;
 
 
for(int i=0; i<n; ++i){
	for(int j=0; j<m; ++j){
		if(cnt==0 || cnt==2)vis[i][j]=1; 
		cin>>g[i][j];
		if(g[i][j]=='*'){cnt++; vis[i][j]=1;  
		
	}
}
 
for(int i=0; i<n; ++i){
	for(int j=0; j<m; ++j){
		if(!vis[i][j]) dfs(i,j); 
	}
}
}
}