hdu1505 City Game

#include <fstream>
#include <iostream>
#include <string>
#include <complex>
#include <math.h>
#include <set>
#include <vector>
#include <map>
#include <queue>
#include <stdio.h>
#include <stack>
#include <algorithm>
#include <list>
#include <ctime>
#include <memory.h>
#include <ctime>
#include <assert.h>

#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define eps 1e-8
#define M_PI 3.141592653589793

typedef long long ll;
const ll mod=1000000007;
const int inf=99999999;
ll powmod(ll a,ll b) {ll res=1;a%=mod;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}

using namespace std;
const int maxn=1100;
int a[maxn],l[maxn],r[maxn];
char M[maxn][maxn];
int main()
{
    int T;scanf("%d",&T);
    while(T--){
        int n,m;scanf("%d %d",&n,&m);
        getchar();
        for(int i=1;i<=n;i++){
            for(int j=1;j<=m;j++){
                scanf("%c",&M[i][j]);
                getchar();
            }
        }
        int res=0;
        memset(a,0,sizeof(a));
        a[0]=a[m+1]=-1;
        for(int i=1;i<=n;i++){
            for(int j=1;j<=m;j++){
                if(M[i][j]=='F') a[j]+=1;
                else if(M[i][j]=='R') a[j]=0;
            }
            for(int j=1;j<=m;j++) l[j]=r[j]=j;
            for(int j=1;j<=m;j++){
                while(a[l[j]-1]>=a[j])  l[j]=l[l[j-1]];
            }
            for(int j=m;j>=1;j--){
                while(a[r[j]+1]>=a[j]) r[j]=r[r[j+1]];
            }
            for(int j=1;j<=m;j++)
                res=max(res,(r[j]-l[j]+1)*a[j]);
        }
        printf("%d
",3*res);
    }
}