Compilare: main.cpp: In function 'int main()': main.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < a.size(); ) { ~~^~~~~~~~~~ main.cpp:16:13: warning: unused variable 'curr' [-Wunused-variable] int curr = 0; ^~~~ main.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < b.size(); ) { ~~^~~~~~~~~~ main.cpp:32:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (b[i] == a[curr + 1] && curr < a.size() && i < b.size()) { ~~~~~^~~~~~~~~~ main.cpp:32:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (b[i] == a[curr + 1] && curr < a.size() && i < b.size()) { ~~^~~~~~~~~~ main.cpp:37:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (curr == a.size() - 1) { ~~~~~^~~~~~~~~~~~~~~