Buggy python submission (verdict: Time Limit Exceeded):
import itertools

N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(counter)
        counter=1
if counter!=0:
    counts.append(counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

for i in N:
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[soujou(j) for j in C]
    answer+=sum(kumiawase)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools

N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(counter)
        counter=1
if counter!=0:
    counts.append(counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

for i in N:
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[soujou(j) for j in C]
    answer+=sum(kumiawase)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools

N=int(input())
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0
for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(counter)
        counter=1
if counter!=0:
            counts.append(counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[soujou(j) for j in C]
    answer+=sum(kumiawase)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
import collections

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[soujou(j) for j in C]
    answer+=sum(kumiawase)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
import collections

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[soujou(j) for j in C]
    answer=(answer+sum(kumiawase))%(7+10**9)
print(answer)

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
import collections
import numpy as np

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[np.prod(j) for j in C]
    answer=(answer+sum(kumiawase))%(7+10**9)
print(answer)

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Runtime Error):
import itertools
import collections
import numpy as np

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[np.prod(j) for j in C]
    answer=(answer+sum(kumiawase))%(7+10**9)
print(answer)

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Runtime Error):
import itertools
import collections
import numpy as np

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[np.prod(j) for j in C]
    answer+=sum(kumiawase)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Runtime Error):
import itertools
import collections
import numpy as np

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[np.prod(j) for j in C]
    answer+=sum(kumiawase)
print(answer)

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
N=int(input())
S=list(input())
answer=0

def is_unique(seq):
    return len(seq) == len(set(seq))

for i in range(N):
    C=list(itertools.combinations(S, i+1))
    C=[j for j in C if is_unique(j)]
    answer+=len(C)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
N=int(input())
S=list(input())
answer=0

def is_unique(seq):
    return len(seq) == len(set(seq))

for i in range(N):
    C=list(itertools.combinations(S, i+1))
    C=[j for j in C if is_unique(j)]
    answer+=len(C)
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools
N=int(input())
S=list(input())
answer=0

def is_unique(seq):
    return len(seq) == len(set(seq))

for i in range(N):
    counter=0
    C=list(itertools.combinations(S, i+1))
    for j in range(len(C)):
        if is_unique(C[j]):
            counter+=1
    answer+=counter
print(answer%(7+10**9))

Fixed submission:
N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))