CSES - HIIT Open 2018 - Results
Test results
testverdicttime
#1ACCEPTED0.01 sdetails
#2ACCEPTED0.01 sdetails
#3ACCEPTED0.01 sdetails
#4ACCEPTED0.01 sdetails
#5ACCEPTED0.01 sdetails
#6ACCEPTED0.01 sdetails
#70.01 sdetails
#8ACCEPTED0.01 sdetails
#9ACCEPTED0.01 sdetails
#10ACCEPTED0.01 sdetails
#11ACCEPTED0.01 sdetails
#12ACCEPTED0.01 sdetails
#13ACCEPTED0.01 sdetails
#14ACCEPTED0.01 sdetails
#15ACCEPTED0.01 sdetails
#160.01 sdetails
#17ACCEPTED0.06 sdetails
#18ACCEPTED0.06 sdetails
#19ACCEPTED0.07 sdetails
#20ACCEPTED0.07 sdetails
#21ACCEPTED0.07 sdetails
#220.10 sdetails

### Code

```#include <iostream>
#include <string>
#include <stdio.h>
#include <math.h>
#include <vector>

using namespace std;

int main() {
int n;
cin >> n;
char c;
vector<bool> m(n * n, false);
vector<bool> rows(n, true); // black rows

for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
cin >> c;
if (c == '1') {
m[i * n + j] = true;
} else {
rows[i] = false;
}
}
}

if (n == 1) {
if (m[0]) cout << 1 << endl;
else cout << 0 << endl;
return 0;
}

int blackColCount = 0;

for (int j = 0; j < n; j++) {
bool isBlack = true;
bool isValid = true;
for (int i = 0; i < n; i++) {
if (m[i * n + j]) {
if (!rows[i]) isValid = false;
} else {
isBlack = false;
}
}
if (!isBlack && !isValid) {
cout << -1 << endl;
return 0;
}
if (isBlack) blackColCount++;
}

int blackRowCount = 0;

for (int i = 0; i < n; i++) {
if (rows[i]) blackRowCount++;
}
cout << blackColCount + blackRowCount << endl;
}
```

### 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

Verdict:

input
2
11
11

correct output
2

user output
4

#### 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

Verdict:

input
3
111
111
111

correct output
3

user output
6

#### 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:

input
1000
111111111111111111111111111111...

correct output
1000

user output
2000