Compilare: main.cpp: In function 'int main()': main.cpp:43:42: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(li.empty() || !li2.empty()&&li2.front() < li.front()) ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:24:10: warning: unused variable 'j' [-Wunused-variable] int i, j, n, m, a; ^ main.cpp:22:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scandura.in", "r",stdin); ^ main.cpp:23:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scandura.out", "w", stdout); ^ main.cpp:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:28:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] {scanf("%d",&a);li.push_back(a);} ^