Compilare: main.cpp: In function 'int main()': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j<s[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:32:46: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses] dp[x] = dp[x] & dp[x ^ (1<<k) | (1<<ind)]; ~~^~~~~~~~ main.cpp:14:10: warning: unused variable 'v' [-Wunused-variable] bool v[22]; ^