Compilare: user.cpp: In function ‘int main()’: user.cpp:244:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(m2[s1x[i]][s1y[i]] < mr2 && m2[s1x[i]][s1y[i]] != -1) ^ user.cpp:253:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(m1[s2x[i]][s2y[i]] < mr3 && m1[s2x[i]][s2y[i]] != -1) ^ user.cpp:258:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(m2[s2x[i]][s2y[i]] < mr4 && m2[s2x[i]][s2y[i]] != -1) ^