Compilare: user.cpp: In function ‘int main()’: user.cpp:73:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < strlen(S);i++) ^ user.cpp:116:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < Sol.size();i++) ^ user.cpp:65:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rezervatie.in","r",stdin); ^ user.cpp:66:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rezervatie.out","w",stdout); ^ user.cpp:68:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&L,&C); ^ user.cpp:69:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",S); ^ user.cpp:104:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:108:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&X,&Y); ^