Compilare: main.cpp: In function 'int main()': main.cpp:85:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] cin >> mat[i] + 1; ~~~~~~~^~~ main.cpp:80:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.in","r",stdin); ^ main.cpp:81:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out","w",stdout); ^ main.cpp: In function 'int OK(int)': main.cpp:58:16: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized] uz[sx][sy] = 0; ~~~~~~~~~~~^~~ main.cpp:69:25: warning: 'fy' may be used uninitialized in this function [-Wmaybe-uninitialized] if (X == fx && Y == fy){ ~~~~~~~~^~~~~~~~~~ main.cpp:69:13: warning: 'fx' may be used uninitialized in this function [-Wmaybe-uninitialized] if (X == fx && Y == fy){ ^~ main.cpp:58:16: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized] uz[sx][sy] = 0; ~~~~~~~~~~~^~~