Compilare: main.cpp: In function 'void plusUnu()': main.cpp:39:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); i ++) { ~~^~~~~~~~~~~~ main.cpp: In function 'void promenada(Trie*, int)': main.cpp:59:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < dp[nod->index].size(); j ++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:62:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = dp[nod->index].size(); j < ans.size(); j ++) { ~~^~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:75:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n", &n, &k); ^ main.cpp:78:39: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(str, charmax + 5, stdin); ^ main.cpp: In function 'int main()': main.cpp:92:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cli.in", "r", stdin); ^ main.cpp:93:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cli.out", "w", stdout); ^