Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    N=int(input())
    l,r=0,N
    print(0)
    s=input()
    ls=s
    if s!='Vacant':
        while True:
            x=(l+r)//2
            print(x)
            s=input()
            if s=='Vacant':break
            elif ((x-l)%2==0 and s==ls) or ((x-l)%2==1 and s!=ls):
                l=x
                ls=s
            else:
                r=x



if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    l,r=0,n
    print(0)
    s=input()
    ls=s
    if s=='Vacant':sys.exit()
    while True:
        x=(l+r)//2
        print(x)
        s=input()
        if s=='Vacant':break
        elif ((x-l)%2==0 and s==ls) or ((x-l)%2==1 and s!=ls):
            l=x
            ls=s
        else:
            r=x


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    n0=0
    print(n0)
    s=input()
    if s=="Vacant":sys.exit()
    left,right=0,n
    mid=(right+left)//2
    sl=s
    print(mid)
    sm=input()
    while sm!="Vacant" and right>left:
        if ((mid-left)%2==0 and sm==sl) or ((mid-left)%2==1 and sm!=sl):
            left=mid
            sl=sm
        else:
            right=mid
        mid=(right+left)//2
        print(mid)
        sm=input()        
    if left>=right:
        print(left)

if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    n0=0
    print(n0)
    s=input()
    if s=="Vacant":sys.exit()
    left,right=0,n
    mid=(right+left)//2
    sl=s
    print(mid)
    sm=input()
    while sm!="Vacant" and right>left:
        if ((mid-left)%2==0 and sm==sl) or ((mid-left)%2==1 and sm!=sl):
            left=mid
            sl=sm
        else:
            right=mid
        mid=(right+left)//2
        print(mid)
        sm=input()        
    print(left)
    print(right)

if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    n0=0
    print(n0)
    s=input()
    if s=="Vacant":sys.exit()
    left,right=0,n
    mid=(right+left)//2
    sl=s
    print(mid)
    sm=input()
    while sm!="Vacant" and right>left:
        if ((mid-left)%2==0 and sm==sl) or ((mid-left)%2==1 and sm!=sl):
            left=mid
            sl=sm
        else:
            right=mid
        mid=(right+left)//2
        print(mid)
        sm=input()        


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    n0=0
    print(n0)
    s=input()
    if s=="Vacant":sys.exit()
    left,right=0,n
    mid=(right+left)//2
    sl=s
    print(mid)
    sm=input()
    while sm!="Vacant" and right>left:
        if ((mid-left)%2==0 and sm==sl) or ((mid-left)%2==1 and sm!=sl):
            left=mid
            sl=sm
        else:
            sr=mid
        mid=(right+left)//2
        print(mid)
        sm=input()        


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    s=['Vacant','Male', 'Female']
    right=0
    left=n
    print(0)
    sr=input()
    if sr=="Vacant":sys.exit()
    print(str(n-1))
    if input()=="Vacant":sys.exit()
    while left-right>1:
        mid=(left-right)//2
        print(mid)
        x=input()
        if x=="Vacant":sys.exit()
        if ((left-right)%2==0 and x!=sr) or (n2%2==1 and x==sr):
            left=mid
        else:
            right=mid
            sr=x
    print(str(right))


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    s=['Vacant','Male', 'Female']
    right=0
    left=n
    sr=input("0")
    if sr=="Vacant":
        print(0)
        sys.exit()
    if input(str(n-1))=="Vacant":
        print(n-1)
        sys.exit()
    while right-left>1:
        mid=(left-right)//2
        x=input(str(mid))
        if x=="Vacant":
            print(str(mid))
            sys.exit()
        if ((left-right)%2==0 and x!=sr) or (n2%2==1 and x==sr):
            left=mid
        else:
            right=mid
            sr=x
    print(str(right))


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    s=['Vacant','Male', 'Female']
    left=n+1
    sr=input("0")
    while right-left>1:
        mid=(left-right)//2
        x=input(str(mid))
        if x=="Vacant":
            print(str(mid))
            break
        if ((left-right)%2==0 and x!=sr) or (n2%2==1 and x==sr):
            left=mid
        else:
            right=mid
            sr=x
    print(str(right))


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    s=['Vacant','Male', 'Female']
    left=n+1
    sr=input("0")
    while right-left>1:
        mid=(left-right)//2
        x=input(str(mid))
        if ((left-right)%2==0 and x!=sr) or (n2%2==1 and x==sr):
            left=mid
        else:
            right=mid
            sr=x
    print(str(right))


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x

Buggy python submission (verdict: Time Limit Exceeded):
import sys
def input(): return sys.stdin.readline().rstrip()
def main():
    n=int(input())
    s=['Vacant','Male', 'Female']
    left=n+1
    sr=input("0")
    while right-left>1:
        mid=(left-right)//2
        x=input(str(mid))
        if ((left-right)%2==0 and x!=sr) or (n2%2==1 and x==sr):
            left=mid
        else:
            right=mid
            sr=x


if __name__=='__main__':
    main()

Fixed submission:
N=int(input())
l,r=0,N
print(0)
s=input()
ls=s
if s!='Vacant':
    for i in range(19):
        x=l+(r-l)//2
        print(x)
        s=input()
        if s=='Vacant':
            break
        elif (x-l)%2==0 and s==ls or (x-l)%2==1 and s!=ls:
            l=x
            ls=s
        else:
            r=x