Compilare: main.cpp: In function 'int main()': main.cpp:28:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1; j<=m; ++j) ^~~ main.cpp:29:31: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<B[a[i][j]];a[i][j]-=B[a[i][j]]*B[a[i][j]]; ^