Submission

Score: 20

User: C12

Problemset: ทางเชื่อม

Language: cpp

Time: 0.323 second

Submitted On: 2026-01-08 11:18:39

#include <bits/stdc++.h>
using namespace std;

#define f first
#define s second
#define pii pair<ll,ll>
#define puii pair<ull,ull>
#define piii pair<ll,pii>
#define tiiii tuple<ll,ll,ll,ll>
#define ll long long
#define ull unsigned long long
#define mp make_pair
#define mt make_tuple
 
#define mpiiii(a,b,c) make_pair(a,make_pair(b,c));
ll mod = 1000000007;

ll n;
bool board[2][5001];
ll prevs[2],curr[2];

void solve(){
    cin >> n;
    char t;

    for(int i = 0;i < n;i++){
        cin >> t;
        if(t == '\n' || t =='\r') {
            i--;
            continue;
        }

        if(t == '.'){
            board[0][i] = 1;
        }
        else{
            board[0][i] = 0;
        }
    }

    for(int i = 0;i < n;i++){
        cin >> t;
        if(t == '\n' || t =='\r') {
            i--;
            continue;
        }
        if(t == '.'){
            board[1][i] = 1;
        }
        else{
            board[1][i] = 0;
        }
    }

    prevs[0] = 1;
    prevs[1] = 1;
    for(int i = 0;i < n;i++){
        curr[0] = 0;
        curr[1] = 0;

        if(board[0][i]){
            curr[0] += prevs[0];
        }
        if(board[1][i])
        {
            curr[1] += prevs[1];
        }
        if(board[0][i] && board[1][i]){
            curr[0] += prevs[1];
            curr[1] += prevs[0];
        }

        while(curr[0] >= mod){
            curr[0] -= mod;
        }
        while(curr[1] >= mod){
            curr[1] -= mod;
        }
        prevs[0] = curr[0];
        prevs[1] = curr[1];
    }
    ll out = (curr[0] + curr[1]) % mod;
    cout << out << '\n';

    return;
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    ll q;
 
    cin >> q;

    while(q--)
        solve(); 

    return 0;
}
/*
3
1
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2
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2
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..

3
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4
8
........
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9
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10
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20
....................
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1
40
........................................
........................................


*/