Compilare: main.cpp: In function 'void solve()': main.cpp:30:9: warning: unused variable 'j' [-Wunused-variable] int i, j, k, s; ^ main.cpp:30:12: warning: unused variable 'k' [-Wunused-variable] int i, j, k, s; ^ main.cpp:32:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &n); ^ main.cpp:35:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d ", &a[i]); ^ main.cpp: In function 'int main()': main.cpp:52:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d ", &t); ^