foo.cc: In function 'int main()':
foo.cc:20:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%d%d", &n, &k);
               ~~    ^
foo.cc:20:21: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
foo.cc:23:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%d", &m[i][j]);
             ~~~~~~~~^
foo.cc:20:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d%d", &n, &k);
 ~~~~~^~~~~~~~~~~~~~~~
foo.cc:23:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d", &m[i][j]);
 ~~~~~^~~~~~~~~~~~~~~~

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