Compilare: user.cpp: In function ‘int main()’: user.cpp:120:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &u); ^ user.cpp:122:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^ user.cpp:124:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x, &y); ^ user.cpp: In function ‘int solve(bool*, int*, bool)’: user.cpp:91:35: warning: ‘cine’ may be used uninitialized in this function [-Wmaybe-uninitialized] rez[++rez[0]]=cine; ^