Problem p02873 (python)

Fixed submission:
s = input()
num = len(s)
a = [0]*(num+1)

for i in range(num):
    if s[i] is '<':
        a[i+1] = max(a[i+1], a[i]+1)

for i in range(1, num+1):
    if s[-i] is '>':
        a[-(i+1)] = max(a[-(i+1)], a[-i]+1)
print(sum(a))

Buggy submission (verdict: Runtime Error):
s = input()
num = len(s)
a = [0]*(num+1)

for i in range(num):
    if s[i] is '<':
        a[i+1] = max(a[i+1], a[i]+1)

for i in range(1, num+1):
    print(a)
    if s[-i] is '>':
        a[-(i+1)] = max(a[-(i+1)], a[-i]+1)
print(sum(a))

Buggy submission (verdict: Runtime Error):
S = input()

count0, count1 = 0, 0
val = []
for i in range(len(S)):
    if S[i] == '<':
        count0 += 1
        if count1 != 0:
            val.append(count1)
        if i == len(S)-1:
            val.append(count0)
        count1 = 0
    else:
        count1 += 1
        if count0 != 0:
            val.append(count0)
        if i == len(S)-1:
            val.append(count1)
        count0 = 0
#print(val)
ans = 0
if S[0] == '>' and val[0] == 1:
    ans += 1
for i in range(0, len(val)-1, 2):
    a = max(val[i], val[i+1])
    b = min(val[i], val[i+1])
    ans += a*(a+1)/2 + (b-1)*b/2
if len(val) % 2 == 1:
    if S[-1] == '>':
        a = max(val[-2], val[-1])
        ans += a*(a+1)/2
    else:
        b = min(val[-2], val[-1])
        ans += (b+1)*b/2    
print(int(ans))

Buggy submission (verdict: Runtime Error):
S = input()

count0, count1 = 0, 0
val = []
for i in range(len(S)):
    if S[i] == '<':
        count0 += 1
        if count1 != 0:
            val.append(count1)
        if i == len(S)-1:
            val.append(count0)
        count1 = 0
    else:
        count1 += 1
        if count0 != 0:
            val.append(count0)
        if i == len(S)-1:
            val.append(count1)
        count0 = 0
#print(val)
ans = 0
for i in range(0, len(val)-1, 2):
    a = max(val[i], val[i+1])
    b = min(val[i], val[i+1])
    ans += a*(a+1)/2 + (b-1)*b/2
if len(val) % 2 == 1:
    if S[-1] == '>':
        a = max(val[-2], val[-1])
        ans += a*(a+1)/2
    else:
        b = min(val[-2], val[-1])
        ans += (b+1)*b/2    
print(int(ans))

Buggy submission (verdict: Runtime Error):
S = input()

count0, count1 = 0, 0
val = []
for i in range(len(S)):
    if S[i] == '<':
        count0 += 1
        if count1 != 0:
            val.append(count1)
        if i == len(S)-1:
            val.append(count0)
        count1 = 0
    else:
        count1 += 1
        if count0 != 0:
            val.append(count0)
        if i == len(S)-1:
            val.append(count1)
        count0 = 0

ans = 0
for i in range(0, len(val)-1, 2):
    a = max(val[i], val[i+1])
    b = min(val[i], val[i+1])
    ans += a*(a+1)/2 + (b-1)*b/2
if len(val) % 2 == 1:
    a = max(val[-2], val[-1])
    #b = min(val[i], val[i+1])
    ans += a*(a+1)/2 #+ (b-1)*b/2    
print(int(ans))

Buggy submission (verdict: Runtime Error):
S = input()

count0, count1 = 0, 0
val = []
for i in range(len(S)):
    if S[i] == '<':
        count0 += 1
        if count1 != 0:
            val.append(count1)
        if i == len(S)-1:
            val.append(count0)
        count1 = 0
    else:
        count1 += 1
        if count0 != 0:
            val.append(count0)
        if i == len(S)-1:
            val.append(count1)
        count0 = 0
print(val)
ans = 0
for i in range(0, len(val)-1, 2):
    a = max(val[i], val[i+1])
    b = min(val[i], val[i+1])
    ans += a*(a+1)/2 + (b-1)*b/2
if len(val) % 2 == 1:
    a = max(val[-2], val[-1])
    #b = min(val[i], val[i+1])
    ans += a*(a+1)/2 #+ (b-1)*b/2    
print(int(ans))

Buggy submission (verdict: Runtime Error):
S = input()

count0, count1 = 0, 0
val = []
for i in range(len(S)):
    if S[i] == '<':
        count0 += 1
        if count1 != 0:
            val.append(count1)
        if i == len(S)-1:
            val.append(count0)
        count1 = 0
    else:
        count1 += 1
        if count0 != 0:
            val.append(count0)
        if i == len(S)-1:
            val.append(count1)
        count0 = 0

ans = 0
for i in range(0, len(val)-1, 2):
    a = max(val[i], val[i+1])
    b = min(val[i], val[i+1])
    ans += a*(a+1)/2 + (b-1)*b/2
if len(val) % 2 == 1:
    b = min(val[-2], val[-1])
    ans += (b+1)*b/2    
print(int(ans))