Compilare: user.cpp: In function ‘int main()’: user.cpp:12:21: warning: unused variable ‘l’ [-Wunused-variable] int n, m, i, j, l, c, maxim, cop; ^ user.cpp:12:24: warning: unused variable ‘c’ [-Wunused-variable] int n, m, i, j, l, c, maxim, cop; ^ user.cpp:12:34: warning: unused variable ‘cop’ [-Wunused-variable] int n, m, i, j, l, c, maxim, cop; ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmlsc.in", "r", stdin); ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmlsc.out", "w", stdout); ^ user.cpp:13:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x[i]); ^ user.cpp:17:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &y[i]); ^