Compilare: main.cpp: In function 'int main()': main.cpp:81:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (b > r) ~~^~~ main.cpp:97:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ans[it1] > b) ~~~~~~~~~^~~ main.cpp:100:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ans[v[it2].y] > b) ~~~~~~~~~~~~~~^~~ main.cpp:80:12: warning: unused variable 'l' [-Wunused-variable] ll l = v[0].x, r = v[n - 1].x; ^ main.cpp:60:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:65:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%llu", &x); ^