Compilare: main.cpp: In function 'int main()': main.cpp:31:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < a.size()) ~~^~~~~~~~~~ main.cpp:34:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j + 2 < a.size() && a[j] > a[j + 1] && a[j + 1] < a[j + 2]) ~~~~~~^~~~~~~~~~ main.cpp:42:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i >= a.size()) break; ~~^~~~~~~~~~~ main.cpp:30:17: warning: unused variable 'cnt' [-Wunused-variable] int maxi = 0, cnt(0), i = 0, j; ^~~ main.cpp:53:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < a.size()) ~~^~~~~~~~~~