Compilare: user.cpp: In function ‘int main()’: user.cpp:35:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < G[i].size(); k++) ^ user.cpp:38:26: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if ((1<<u-1)&j) ^ user.cpp:40:43: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] int newdp = dp[j^(1<<u-1)][i-1] + 1; ^ user.cpp:41:47: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] int newways = ways[j^(1<<u-1)][i-1]; ^