Compilare: main.cpp: In function 'int main()': main.cpp:51:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < strlen(ss); i++) ~~^~~~~~~~~~~~ main.cpp:55:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < strlen(sk); i++) ~~^~~~~~~~~~~~ main.cpp:47:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bolt.in", "r", stdin); ^ main.cpp:48:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bolt.out", "w", stdout); ^ main.cpp:50:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s %s", &n, sk, ss); ^