Compilare: main.cpp: In function 'int main()': main.cpp:116:29: warning: unused variable 'am' [-Wunused-variable] int st = 0, dr = n - 1, am = 0; ^~ main.cpp:87:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dupadealuri.in", "r", stdin); ^ main.cpp:88:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dupadealuri.out", "w", stdout); ^ main.cpp:90:31: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s, sizeof(s), stdin); ^