Why I have wa #2?
My solution:
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#include <iostream>
#include <cstdio>
#include <queue>
#include <map>
using namespace std;

#define mkpair make_pair

int main()
{
    int n,m;
    char a[300];
    cin.getline(a,300);
    int fmt=sscanf(a,"%d%d",&n,&m);
    bool fmt1;
    bool pic[10][10];
    bool pic2[10][10];
    int ml[10],md[10];
    if(fmt==1)fmt1=true;else fmt1=false;
    if(fmt1)
    {
        int i,j,x,y;
        for(i=0;i<10;i++)
            for(j=0;j<10;j++){pic[i][j]=false;pic2[i][j]=false;}
        for(i=0;i<10;i++){ml[i]=100;md[i]=100;}
        for(i=0;i<n;i++)
        {
            cin>>x>>y;
            x--;y--;
            pic[y][x]=true;
            if(ml[y]>x)ml[y]=x;
            if(md[x]>y)md[x]=y;
        }
        int mdl=100,mdd=-1;
        for(i=0;i<10;i++)
        {
            if(ml[i]<mdl)mdl=ml[i];
        }
        mdd=md[mdl];
        cout<<mdl+1<<" "<<mdd+1<<"\n";
        queue<pair<int,int> > pc;
        pc.push(mkpair(mdl,mdd));
        while(!pc.empty())
        {
            x=pc.front().first;y=pc.front().second;pc.pop();
            pic2[y][x]=true;
            if(x<9 && !pic2[y][x+1] && pic[y][x+1]){cout<<"R";pic2[y][x+1]=true;pc.push(mkpair(x+1,y));}
            if(y<9 && !pic2[y+1][x] && pic[y+1][x]){cout<<"T";pic2[y+1][x]=true;pc.push(mkpair(x,y+1));}
            if(x>0 && !pic2[y][x-1] && pic[y][x-1]){cout<<"L";pic2[y][x-1]=true;pc.push(mkpair(x-1,y));}
            if(y>0 && !pic2[y-1][x] && pic[y-1][x]){cout<<"B";pic2[y-1][x]=true;pc.push(mkpair(x,y-1));}
            if(pc.empty())cout<<".\n";else cout<<",\n";
        }
    }
    else
    {
        queue<pair<int,int> > pc;
        pc.push(mkpair(n-1,m-1));
        int i,j;
        for(i=0;i<10;i++)
            for(j=0;j<10;j++){pic[i][j]=false;pic2[i][j]=false;}
        int cnt=0;
        bool dr=true;
        while(!pc.empty())
        {
            cnt++;
            int y=pc.front().second,x=pc.front().first;pc.pop();
            pic[y][x]=true;
            char c='\0';
            while((c!=',')&&(c!='.')&&(dr))
            {
                cin>>c;
                switch(c)
                {
                    case 'R':pic[y][x+1]=true;
                        pc.push(mkpair(y,x+1));
                        break;
                    case 'T':pic[y+1][x]=true;
                        pc.push(mkpair(y+1,x));
                        break;
                    case 'L':pic[y][x-1]=true;
                        pc.push(mkpair(y,x-1));
                        break;
                    case 'B':pic[y-1][x]=true;
                        pc.push(mkpair(y-1,x));
                        break;
                }
                dr=(c!='.');
            }
        }
        int y,x;
        cout<<cnt<<'\n';
        for(x=0;x<10;x++)
            for(y=0;y<10;y++)
                if(pic[y][x])cout<<x+1<<' '<<y+1<<'\n';
    }
    return 0;
}
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