Compilare: main.cpp: In function 'int main()': main.cpp:13:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) ^~~ main.cpp:16:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' nr=1; ^~ main.cpp:45:16: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(n==3 && m==4 || n==3 && m==3) ~~~~~^~~~~~~