Compilare: main.cpp: In function 'int main()': main.cpp:66:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&q); ^ main.cpp:68:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i][0]); ^ main.cpp:70:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i][j]); ^ main.cpp:75:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d",&t,&a,&b); ^ main.cpp: In function 'void solve2(int, int)': main.cpp:47:7: warning: 'mini' may be used uninitialized in this function [-Wmaybe-uninitialized] int mini; ^~~~