from bisect import bisect_left

N, Q = map(int, input().split())
S = input()
HWP = [list(map(int, input().split())) for _ in range(Q)]

cumD = [0]
cumR = [0]
for i in range(N):
    if S[i] == "D":
        cumD.append(cumD[-1]+1)
        cumR.append(cumR[-1])
    else:
        cumD.append(cumD[-1])
        cumR.append(cumR[-1]+1)

for i in range(Q):
    H, W, P = HWP[i]
    if cumD[-1]-cumD[P] < H and cumR[-1]-cumR[P] < W:
        h, w = cumD[-1]-cumD[P], cumR[-1]-cumR[P]
        C = min((H-h-1)//cumD[-1], (W-w-1)//cumR[-1])
        h += cumD[-1]*C
        w += cumR[-1]*C
        H -= h
        W -= w
        P = 0
    if cumD[-1]-cumD[P] >= H and cumR[-1]-cumR[P] >= W:
        print(min(bisect_left(cumD, cumD[P]+H), bisect_left(cumR, cumR[P]+W)) % N)
    elif cumD[-1]-cumD[P] >= H:
        print(bisect_left(cumD, cumD[P]+H)%N)
    else:
        print(bisect_left(cumR, cumR[P]+W)%N)