Compilare: main.cpp:3: warning: ignoring '#pragma unroll ' [-Wunknown-pragmas] 3 | #pragma unroll | main.cpp: In function 'int main()': main.cpp:47:10: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 47 | {for (t=j+1;t<=n;++t) | ^~~ main.cpp:49:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 49 | a[k][j]=0; | ^