Compilare: main.cpp: In function 'int main()': main.cpp:19:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 19 | for(i=0;i<81;i++)n+=a[i]*(a[i]-1)/2;o<<++n; | ^~~ main.cpp:19:37: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 19 | for(i=0;i<81;i++)n+=a[i]*(a[i]-1)/2;o<<++n; | ^