Compilare: main.cpp: In function 'void Solve()': main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < a.size(); ++ i ) { ~~^~~~~~~~~~ main.cpp:27:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i != a.size() - 1) Power[ j ] = (1LL * Power[ j ] * Put[ j ]) % MOD[ j ]; ~~^~~~~~~~~~~~~~~ main.cpp:36:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = a.size(); i < b.size(); ++ i ) { ~~^~~~~~~~~~