foo.cc: In function 'int main()':
foo.cc:6:6: warning: unused variable 'count' [-Wunused-variable]
6 | int count = 0;
| ^~~~~
foo.cc:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
8 | scanf("%d%d", &n,&m);
| ~~~~~^~~~~~~~~~~~~~~
foo.cc:13:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
13 | scanf("%d", &s[i][j]);
| ~~~~~^~~~~~~~~~~~~~~~
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