Problem: A robot is put at the origin in a two-dimensional plane. Initially, the robot is facing in the positive x-axis direction.  This robot will be given an instruction sequence s. s consists of the following two kinds of letters, and will be executed in order from front to back.    * `F` : Move in the current direction by distance 1.   * `T` : Turn 90 degrees, either clockwise or counterclockwise.  The objective of the robot is to be at coordinates (x, y) after all the instructions are executed. Determine whether this objective is achievable.

Submission attempts (in order):
import copy

s = input()
X, Y = list(map(int, input().split()))








s += "T"

now = 1

start = 0
go = 0
x = []
y = []
for i in s:
    if i == "T":
        if start == 0:
            X - go
            go = 0
            start = 1
        else:
            if go != 0:
                if now == 1:
                    x.append(go)
                else:
                    y.append(go)
                go = 0
        now *= -1
    if i == "F":
        go += 1

X = abs(X)
Y = abs(Y)
x_use = sum(x) - X
y_use = sum(y) - Y
if x_use % 2 == 1 or y_use % 2 == 1 or x_use < 0 or y_use < 0:
    print("No")
    exit()
x_use = x_use//2
y_use = y_use//2


def solve(integer_list, target_sum,  i=0, sum=0):
    if sum > target_sum:
        False
    if i == len(integer_list):
        return sum == target_sum
    if (solve(integer_list, target_sum, i + 1, sum)):
        return True
    if (solve(integer_list, target_sum, i + 1, sum + integer_list[i])):
        return True
    return False

if solve(x, x_use) and solve(y, y_use):
    print("Yes")
else:
    print("No")




import copy

s = input()
X, Y = list(map(int, input().split()))








s += "T"

now = 1

start = 0
go = 0
x = []
y = []
for i in s:
    if i == "T":
        if start == 0:
            X = X - go
            go = 0
            start = 1
        else:
            if go != 0:
                if now == 1:
                    x.append(go)
                else:
                    y.append(go)
                go = 0
        now *= -1
    if i == "F":
        go += 1
x.sort()
y.sort()
x = x[::-1]
y = y[::-1]
X = abs(X)
Y = abs(Y)
x_use = sum(x) - X
y_use = sum(y) - Y
if x_use % 2 == 1 or y_use % 2 == 1 or x_use < 0 or y_use < 0:
    print("No")
    exit()
x_use = x_use//2
y_use = y_use//2


def solve(integer_list, target_sum,  i=0, sum=0):
    if sum > target_sum:
        return False
    if sum == target_sum:
        return True
    if i == len(integer_list):
        return sum == target_sum
    if (solve(integer_list, target_sum, i + 1, sum)):
        return True
    if (solve(integer_list, target_sum, i + 1, sum + integer_list[i])):
        return True
    return False

#if solve(x, x_use) and solve(y, y_use):
#    print("Yes")
#else:
#    print("No")


def part_sum0(a,A):
    
    N=len(a)
    dp=[[0 for i in range(A+1)] for j in range(N+1)]
    dp[0][0]=1

    #DP
    for i in range(N):
        for j in range(A+1):
            if a[i]<=j: 
                dp[i+1][j]=dp[i][j-a[i]] or dp[i][j]
            else: 
                dp[i+1][j]=dp[i][j]
    return dp[N][A]
 
if part_sum0(x,x_use) and part_sum0(y, y_use):
    print("Yes")
else:
    print("No")

Verdicts: Runtime Error

Accepted