Compilare: user.cpp: In function ‘int main()’: user.cpp:19:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i = 0; i < h; i++) ^ user.cpp:20:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned j = 0; j < w; j++) ^ user.cpp:22:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i = 0; i < k; i++) ^ user.cpp:26:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned r = 0; r < h; r++) ^ user.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned j = 0; j < w; j++) ^ user.cpp:30:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(tabs(o-1-j)+tabs(s-1-r) <= c) ^ user.cpp:38:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i = 0; i < g; i++) ^ user.cpp:68:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t[s+1][o] == 2 && s+1 < h) ^ user.cpp:78:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t[s][o+1] == 2 && o+1 < w) ^ user.cpp:89:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t[s+1][o] == 1 && s+1 < h) ^ user.cpp:101:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t[s][o+1] == 1 && o+1<w) ^