Compilare: main.cpp: In function 'int main()': main.cpp:30:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(i-w.front()>=k) ^~ main.cpp:33:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' int xx=a[w.front()]; ^~~ main.cpp:33:13: warning: unused variable 'xx' [-Wunused-variable] int xx=a[w.front()]; ^~ main.cpp:34:13: warning: unused variable 'yy' [-Wunused-variable] int yy=a[d.front()]; ^~ main.cpp:12:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&n,&x,&y,&z); ^ main.cpp:13:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++)fscanf(f,"%d",&a[i]); ^