Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:80:40: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] for(int i = 1; (int)cur.size()-1-(1<<i-1) >= 0 ; ++i) { ~^~ main.cpp:81:71: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] dp[i][node] = max(dp[i-1][node], dp[i-1][cur[(int)cur.size()-1-(1<<i-1)]]); ~^~ main.cpp: In function 'int main()': main.cpp:97:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("termite.in", "r", stdin); ^ main.cpp:98:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("termite.out", "w", stdout); ^