Compilare: user.cpp: In function ‘int main()’: user.cpp:16:12: warning: unused variable ‘m’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:16:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:16:21: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:16:24: warning: unused variable ‘t’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:16:27: warning: unused variable ‘d’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:16:30: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:13:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("par.in","r",stdin); ^ user.cpp:14:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("par.out","w",stdout); ^ user.cpp:18:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%*c%s",&n,q); ^