Buggy python submission (verdict: Runtime Error):


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if M!=0:
        if k==a[count]:
            step[k]=0
            if count<M-1:
                    count +=1
        else:
            if k>0:
                step[k]+=step[k-1]
            if k>1:
                step[k]+=step[k-2]
    else:
        if k > 0:
            step[k] += step[k - 1]
        if k > 1:
            step[k] += step[k - 2]



print(step[N]%1000000007

Fixed submission:


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if M!=0:
        if k==a[count]:
            step[k]=0
            if count<M-1:
                    count +=1
        else:
            if k>0:
                step[k]+=step[k-1]
            if k>1:
                step[k]+=step[k-2]
    else:
        if k > 0:
            step[k] += step[k - 1]
        if k > 1:
            step[k] += step[k - 2]



print(step[N]%1000000007)

Buggy python submission (verdict: Runtime Error):


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if k==a[count]:
        step[k]=0
        if count<M-1:
            count +=1
    else:
        if k>0:
            step[k]+=step[k-1]
        if k>1:
            step[k]+=step[k-2]


print(step[N]%1000000007)

Fixed submission:


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if M!=0:
        if k==a[count]:
            step[k]=0
            if count<M-1:
                    count +=1
        else:
            if k>0:
                step[k]+=step[k-1]
            if k>1:
                step[k]+=step[k-2]
    else:
        if k > 0:
            step[k] += step[k - 1]
        if k > 1:
            step[k] += step[k - 2]



print(step[N]%1000000007)

Buggy python submission (verdict: Runtime Error):
W,H,x,y = [int(i) for i in input().split()]
flag=0
if W==x+x and H==y+y:
    flag=1



print(W*H/2,flag)



Fixed submission:


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if M!=0:
        if k==a[count]:
            step[k]=0
            if count<M-1:
                    count +=1
        else:
            if k>0:
                step[k]+=step[k-1]
            if k>1:
                step[k]+=step[k-2]
    else:
        if k > 0:
            step[k] += step[k - 1]
        if k > 1:
            step[k] += step[k - 2]



print(step[N]%1000000007)

Buggy python submission (verdict: Runtime Error):
W,H,x,y = [int(i) for i in input().split()]
flag=0
if W==x*2 and H==y*2:
    flag=1



print(W*H/2,flag)




Fixed submission:


N, M = map(int, input().split())
a=[]
step=[0]*200000
total=1
count=0
num=0

for i in range(M):
    a.append(int(input()))

for x in range(M):
    num=a[x]-a[x-1]
    if(num==1):
        print(0)
        exit(0)
    else:
        num=0

step[0]=1
for k in range(1,N+1):
    if M!=0:
        if k==a[count]:
            step[k]=0
            if count<M-1:
                    count +=1
        else:
            if k>0:
                step[k]+=step[k-1]
            if k>1:
                step[k]+=step[k-2]
    else:
        if k > 0:
            step[k] += step[k - 1]
        if k > 1:
            step[k] += step[k - 2]



print(step[N]%1000000007)