N, Q = map(int, input().split())
S = input()

acc_h = [0]
acc_w = [0]
for i in range(N):
    acc_h.append(acc_h[-1])
    acc_w.append(acc_w[-1])
    if S[i] == 'D':
        acc_h[-1] += 1
    else:
        acc_w[-1] += 1
# print(acc_h, acc_w)

for _ in range(Q):
    h, w, p = map(int, input().split())

    ok = 1 << 30; ng = 0
    while ok - ng > 1:
        mid = (ok + ng) >> 1
        
        i = acc_h[N] * (mid // N) - acc_h[p] + acc_h[mid % N]
        j = acc_w[N] * (mid // N) - acc_w[p] + acc_w[mid % N]

        if i >= h or j >= w:
            ok = mid
        else:
            ng = mid
    
    print(ok % N)