Compilare: main.cpp: In function 'int main()': main.cpp:55:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < exp.size(); i++) { ~~^~~~~~~~~~~~ main.cpp: In function 'int bs(int, long long unsigned int)': main.cpp:35:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] return ans; ^~~ main.cpp: In function 'int main()': main.cpp:57:32: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] ull p1 = pwr(b, e), p2 = pwr(b + 1, e), p = x - p1 < p2 - x? p1 : p2; ~~~^~~~~~~~~~