Compilare: main.cpp: In function 'int main()': main.cpp:46:10: warning: variable 'readLin' set but not used [-Wunused-but-set-variable] bool readLin, readCol, readVall; ^~~~~~~ main.cpp:36:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mxl.in", "r", stdin); ^ main.cpp:37:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mxl.out", "w", stdout); ^ main.cpp:40:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ main.cpp:43:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &lin, &col); ^ main.cpp:106:52: warning: array subscript is above array bounds [-Warray-bounds] if (a[i][j] != 0 && !viz[1 + MAX_N][1 + MAX_N]) ~~~~~~~~~~~~~~~~~~~~~~~~^ main.cpp:106:41: warning: array subscript is above array bounds [-Warray-bounds] if (a[i][j] != 0 && !viz[1 + MAX_N][1 + MAX_N]) ~~~~~~~~~~~~~^