from bisect import bisect_left
n,q = map(int,input().split())
s = input()*2; d = [0]; r = [0]
for v in s:
    d.append(d[-1]); r.append(r[-1])
    if v=="D": d[-1] += 1
    else: r[-1] += 1
for _ in range(q):
    h,w,p = map(int,input().split())
    d1,d2 = divmod(h,d[n]); d3 = max(bisect_left(d,d[p]+d2),p)
    r1,r2 = divmod(w,r[n]); r3 = max(bisect_left(r,r[p]+r2),p)
    print(d3%n if (d1,d3)<(r1,r3) else r3%n)