CSES - HIIT Open 2018 - Results
 Task: Grid Sender: El Numero Uno Submission time: 2018-05-26 13:34:24 +0300 Language: Python3 Status: READY Result: ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.05 sdetails
#2ACCEPTED0.05 sdetails
#3ACCEPTED0.04 sdetails
#4ACCEPTED0.04 sdetails
#5ACCEPTED0.04 sdetails
#6ACCEPTED0.04 sdetails
#7ACCEPTED0.03 sdetails
#8ACCEPTED0.04 sdetails
#9ACCEPTED0.05 sdetails
#10ACCEPTED0.05 sdetails
#11ACCEPTED0.07 sdetails
#12ACCEPTED0.05 sdetails
#13ACCEPTED0.04 sdetails
#14ACCEPTED0.04 sdetails
#15ACCEPTED0.04 sdetails
#16ACCEPTED0.04 sdetails
#17ACCEPTED0.33 sdetails
#18ACCEPTED0.34 sdetails
#19ACCEPTED0.36 sdetails
#20ACCEPTED0.34 sdetails
#21ACCEPTED0.31 sdetails
#22ACCEPTED0.28 sdetails

### Code

def main():
ans = True
n = int(input())
rows = 0
col = None
for i in range(n):
if not ans:
input()
continue
l = list(map(int, list(input())))
if sum(l) == n:
rows += 1
else:
if col == None:
col = l
else:
for j in range(len(l)):
if l[j] != col[j]:
print("-1")
ans = False
if not ans:
return
sr = rows
sc = sum(col) if col is not None else 0
if sr == n or sc == n:
print(n)
else:
print(sr + sc)

main()

### Test details

#### Test 1

Verdict: ACCEPTED

input
1
0

correct output
0

user output
0

#### Test 2

Verdict: ACCEPTED

input
1
1

correct output
1

user output
1

#### Test 3

Verdict: ACCEPTED

input
2
00
00

correct output
0

user output
0

#### Test 4

Verdict: ACCEPTED

input
2
10
00

correct output
-1

user output
-1

#### Test 5

Verdict: ACCEPTED

input
2
11
00

correct output
1

user output
1

#### Test 6

Verdict: ACCEPTED

input
2
11
01

correct output
2

user output
2

#### Test 7

Verdict: ACCEPTED

input
2
11
11

correct output
2

user output
2

#### Test 8

Verdict: ACCEPTED

input
3
000
000
000

correct output
0

user output
0

#### Test 9

Verdict: ACCEPTED

input
3
100
100
100

correct output
1

user output
1

#### Test 10

Verdict: ACCEPTED

input
3
101
101
101

correct output
2

user output
2

#### Test 11

Verdict: ACCEPTED

input
3
111
101
101

correct output
3

user output
3

#### Test 12

Verdict: ACCEPTED

input
3
111
000
000

correct output
1

user output
1

#### Test 13

Verdict: ACCEPTED

input
3
111
000
111

correct output
2

user output
2

#### Test 14

Verdict: ACCEPTED

input
3
111
100
111

correct output
3

user output
3

#### Test 15

Verdict: ACCEPTED

input
3
111
101
111

correct output
4

user output
4

#### Test 16

Verdict: ACCEPTED

input
3
111
111
111

correct output
3

user output
3

#### Test 17

Verdict: ACCEPTED

input
1000
000000000000000000000000000000...

correct output
0

user output
0

#### Test 18

Verdict: ACCEPTED

input
1000
000000000000000000000000000000...

correct output
10

user output
10

#### Test 19

Verdict: ACCEPTED

input
1000
100000000000000000100000000000...

correct output
41

user output
41

#### Test 20

Verdict: ACCEPTED

input
1000
000000100000000001000000010000...

correct output
192

user output
192

#### Test 21

Verdict: ACCEPTED

input
1000
111111111111111111111111111111...

correct output
999

user output
999

#### Test 22

Verdict: ACCEPTED

input
1000
111111111111111111111111111111...

correct output
1000

user output
1000