CSES - HIIT Open 2018 - Results
Submission details
Task:Grid
Sender:TreamDeam
Submission time:2018-05-26 12:38:35
Language:C++
Status:READY
Result:ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.01 sdetails
#2ACCEPTED0.02 sdetails
#3ACCEPTED0.01 sdetails
#4ACCEPTED0.01 sdetails
#5ACCEPTED0.01 sdetails
#6ACCEPTED0.01 sdetails
#7ACCEPTED0.01 sdetails
#8ACCEPTED0.01 sdetails
#9ACCEPTED0.01 sdetails
#10ACCEPTED0.01 sdetails
#11ACCEPTED0.02 sdetails
#12ACCEPTED0.01 sdetails
#13ACCEPTED0.01 sdetails
#14ACCEPTED0.01 sdetails
#15ACCEPTED0.01 sdetails
#16ACCEPTED0.01 sdetails
#17ACCEPTED0.07 sdetails
#18ACCEPTED0.08 sdetails
#19ACCEPTED0.10 sdetails
#20ACCEPTED0.07 sdetails
#21ACCEPTED0.11 sdetails
#22ACCEPTED0.10 sdetails

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:12:9: warning: unused variable 'ai' [-Wunused-variable]
     int ai;
         ^~

Code

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;

    int ar[n][n];
    int visited[n][n];
    char a;
    int ai;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> a;
            int ai = a - '0';
            ar[i][j] = ai;
            visited[i][j] = 0;
        }
    }

    int ans = 0;

    for (int i = 0; i< n; i++) {
        int all = 1;
        for (int j=0; j < n; j++){
            if (ar[i][j] == 0) {
                all = 0;
                break;
            }
        }
        if (all) {
            ans++;
            for (int k = 0; k < n; k++) {
                visited[i][k] = 1;
            }
        }
    }

    for (int i = 0; i< n; i++) {
        int all = 1;
        for (int j=0; j < n; j++){
            if (ar[j][i] == 0) {
                all = 0;
                break;
            }
        }
        if (all) {
            ans++;
            for (int k = 0; k < n; k++) {
                visited[k][i] = 1;
            }
        }
    }

    int all2 = 1;
    for (int i = 0; i < n; i++){
        for (int j = 0; j < n; j++) {
            if (visited[i][j] == 0 && ar[i][j] == 1 ) {
                all2 = 0;
                break;
            }
        }
        if (all2 == 0) {
            break;
        }
    }

    if (all2 == 0) {
        cout << "-1\n";
    } else {
        if (ans == 2*n) {
            ans = n;
        }
        cout << ans << endl;
    }

    return 0;
}

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