Compilare: main.cpp: In function 'int main()': main.cpp:13:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int n, t; scanf("%d%d", &n, &t); ^ main.cpp:18:62: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &std::get<1>(arr[i]), &std::get<0>(arr[i])); ^