Compilare: main.cpp: In function 'void manacher()': main.cpp:30:13: warning: unused variable 'ok' [-Wunused-variable] int ok=0; ^~ main.cpp: In function 'void citire()': main.cpp:12:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &c1); ^ main.cpp:17:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &c1); ^ main.cpp: In function 'int main()': main.cpp:52:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.in","r",stdin); ^ main.cpp:53:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.out","w",stdout); ^