Compilare: main.cpp: In function 'int main()': main.cpp:5:15: warning: unused variable 'j' [-Wunused-variable] int n, i, j, x, l = 0, v[100005], lis[100005] = {0}, st, dr, m; ^ main.cpp:5:28: warning: unused variable 'v' [-Wunused-variable] int n, i, j, x, l = 0, v[100005], lis[100005] = {0}, st, dr, m; ^ main.cpp:6:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.in", "r", stdin); ^ main.cpp:7:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.out", "w", stdout); ^ main.cpp:8:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:10:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^