A country X consists of N cities numbered 0 through $N-1$. The map of this country can be represented as a cycle — for each valid i, city i has exactly two neighboring cities $(i+1) \% N$ and $(i-1+N) \% N$.

The cities in the country are broadly categorized into different types. For each valid i, the type of city i is denoted by $A_i$.

A person called Suarez wants to travel between some pairs of the cities. You are given Q queries. In each query, Suarez wants to travel from city number Y to a city of type Z. Also, he wants to travel only in a given direction along the cycle.

The direction is represented by a letter — L or R. If it's L, Suarez may only move from city i to city $(i-1+N) \% N$ for each valid i. If it's R, he may only move from city i to city $(i+1) \% N$.

You need to find the minimum number of steps Suarez needs to take to reach a city of type Z if he starts moving from city Y in the given direction (he can take zero steps). In one step, Suarez can move from his current city to a neighboring city.

If Suarez can never reach a city of type Z for a given query, print 1 instead.

Constraints

• $1 \le N \le 3,000$

• $1 \le Q \le 500,000$

• $0 \le Y \lt N$

• $1 \le A_i, Z \le 200,000$

Input format

The first line of the input contains two space-separated integers N and Q. The next line contains N space-separated integers, where the i-th of these integers represents $A_i$.

Each of the following Q lines describes a query in the format $Y~Z~D$, where Y is an integer denoting the number of the starting city, Z is an integer denoting the type of a target city and D is a letter ('L' or 'R') denoting the direction along the cycle.

Output format

For each query, print a single line containing one integer — the answer to the query.