#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main() {
int n=0;
int m=0;
int a=0;
int b=0;
char c;
int i=0;
bool check1=false;
bool check2=false;
cin>>n>>m;
vector<vector<char>> vec(n, vector<char>(m));
for(i=0;i<n;i++) {
for(j=0;j<m;j++) {
cin>>c;
vec.at(i).at(j) = c;
}
}
queue<pair<int, int>> q;
q.push({0, 0});
while(!q.empty()) {
a = q.front().first;
b = q.front().second;
q.pop();
if(vec.at(a).at(b) == 'R')
check1 = true;
else
check2 = true;
if(check1 && check2) {
break;
}
if(a!=0 && vec.at(a-1).at(b) != '.')
q.push({a-1, b});
if(a!=(m-1) && vec.at(a+1).at(b) != '.')
q.push({a+1, b});
if(b!=0 && vec.at(a).at(b-1) != '.')
q.push({a, b-1});
if(b!=(n-1) && vec.at(a).at(b+1) != '.')
q.push({a, b+1});
}
if(check1 && check2)
cout<<2<<endl;
else
cout<<1<<endl;
}
Compilation message
tracks.cpp: In function 'int main()':
tracks.cpp:21:9: error: 'j' was not declared in this scope
21 | for(j=0;j<m;j++) {
| ^
