Compilare: main.cpp: In function 'void solve()': main.cpp:73:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(val > mods[y + 1][x]) main.cpp:69:20: warning: unused variable 'y' [-Wunused-variable] int x = 1, y = 1, val = i; ^ main.cpp: In function 'void Read(int&)': main.cpp:24:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp:29:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^