Compilare: user.cpp: In function ‘int main()’: user.cpp:42:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = k; j < s[i].size(); j++) ~~^~~~~~~~~~~~~ user.cpp:57:7: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if(mymap[k][nr] == (1<<k)-2) ^~ user.cpp:59:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ for(j = k; j < s[i].size(); j++) ^~~ user.cpp:59:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = k; j < s[i].size(); j++) ~~^~~~~~~~~~~~~