Compilare: user.cpp: In function ‘int main()’: user.cpp:48:18: warning: variable ‘cmax’ set but not used [-Wunused-but-set-variable] int i, N, M, cmax = 0, tx; ^ user.cpp:48:28: warning: variable ‘tx’ set but not used [-Wunused-but-set-variable] int i, N, M, cmax = 0, tx; ^ user.cpp: In function ‘int solve2(int, int, int)’: user.cpp:44:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:51:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("garaj.in", "r", stdin); ^ user.cpp:52:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("garaj.out", "w", stdout); ^ user.cpp:54:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ user.cpp:57:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x[i].C, &x[i].T); ^ user.cpp:74:43: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d", ret, solve2(ret, N, M)); ^