Compilare: main.cpp: In function 'int main()': main.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= n; i++) ~~^~~~ main.cpp:21:6: warning: unused variable 'ans' [-Wunused-variable] int ans = INT_MIN; ^~~ main.cpp:43:31: warning: 'stop' may be used uninitialized in this function [-Wmaybe-uninitialized] o << start << " " << stop << " " << summ; ^~~ main.cpp:43:16: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] o << start << " " << stop << " " << summ; ^~~