Submission #2111639

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Source Code Expand

#include <cstdio>
#include <vector>
#include <algorithm>

#define all(v) (v).begin(), (v).end()
using namespace std;

int main()
{
    int is_possible = true;

    typedef vector <int> v_int;
    vector <v_int> matrix (4, v_int(4, 0));

    for(int i = 1; i <= 3; i++)
        for(int j = 1; j <= 3; j++)
            scanf("%d", &matrix[i][j]);

    vector <int> row_sum(4, 0);
    for(int i = 1; i <= 3; i++)
        for(int j = 1; j <= 3; j++)
            row_sum[i] += matrix[i][j];

    sort(all(row_sum));
    vector <int> A(4);

    vector <int> column_sum(4, 0);
    for(int i = 1; i <= 3; i++)
        for(int j = 1; j <= 3; j++)
            column_sum[j] += matrix[i][j];

    sort(all(column_sum));
    vector <int> B(4);

    if( !((row_sum[1] - row_sum[2])%3 == 0 && (row_sum[2] - row_sum[3])%3 == 0 && (row_sum[1] - row_sum[3])%3 == 0) )
    {
        is_possible = false; //printf("R");
    }

    if( !((column_sum[1] - column_sum[2])%3 == 0 && (column_sum[2] - column_sum[3])%3 == 0 && (column_sum[1] - column_sum[3])%3 == 0) )
    {
        is_possible = false; //printf("C");
    }

    if( matrix[1][1]  + matrix[3][3] != matrix[3][1] + matrix[1][3])
    {
        is_possible = false;
    }




    printf(is_possible ? "Yes\n" : "No\n");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &matrix[i][j]);
                                       ^

Judge Result