Revise paste Untitled

#include <iostream>
#include <queue>
#include <vector>
#include <map>
using namespace std;
int n, m;
char mat[55][55];
int bfs(vector<pair<int, int>> p, vector<pair<int, int>> F, char c) {
    queue<vector<pair<int, int>>> q;
    q.push(p);
    
    queue<int> q_dist;
    q_dist.push(0);
    
    map<vector<pair<int, int>>, bool> visited;
    
    int di[] = {-1, 1, 0, 0};
    int dj[] = {0, 0, -1, 1};
    while(!q.empty()) {
        vector<pair<int, int>> piano = q.front();
        q.pop();
        int dist = q_dist.front();
        q_dist.pop();
        
        if(piano == F) {
            return dist;
        }
        
        
        for(int k = 0; k < 4; k++) {
            vector<pair<int, int>> t_piano = piano;
            bool ok = true;
            for(int i = 0; i < t_piano.size(); i++) {
                t_piano[i].first += di[k];
                t_piano[i].second += dj[k];
                
              
                if(t_piano[i].first < 0 or t_piano[i].first >= n or t_piano[i].second < 0 or t_piano[i].second >= m) {
                    ok = false;
                    break;
                }
                if(mat[t_piano[i].first][t_piano[i].second] == '#') {
                    ok = false;
                    break;
                }
                if(mat[t_piano[i].first][t_piano[i].second] >= '1' and mat[t_piano[i].first][t_piano[i].second] <= '3') {
                    if(mat[t_piano[i].first][t_piano[i].second] != c) {
                        ok = false;
                        break;
                    }
                }
            }
            if(ok and !visited[t_piano]) {
                visited[t_piano] = true;
                q.push(t_piano);
                q_dist.push(dist + 1);
            }
            
            
        }
        
        
        
        
    }
    
    
    
    return 2e9;
}
int main() {
    cin >> m >> n;
    
    vector<pair<int, int>> F;

vector<pair<int, int>> one, two, three;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            cin >> mat[i][j];
            
            if(mat[i][j] == 'F') {
                F.push_back(make_pair(i, j));
            }
            if(mat[i][j] == '1') {
                one.push_back(make_pair(i, j));
            }
            if(mat[i][j] == '2') {
                two.push_back(make_pair(i, j));
            }
            if(mat[i][j] == '3') {
                three.push_back(make_pair(i, j));
            }
            
        }
    }
    int o = bfs(one, F, '1');
    int t = bfs(two, F, '2');
    int th = bfs(three, F, '3');
    
    int res = min(o, min(t, th));
    if(res == o) {
        cout << 1 << endl << res << endl;
    }
    else if(res == t) {
        cout << 2 << endl << res << endl;
    }
    else {
        cout << 3 << endl << res << endl;
    }
    return 0;
}