Compilare: main.cpp: In function 'int main()': main.cpp:45:27: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 45 | if(r[elem][j]==1) | ^ main.cpp:40:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 40 | if(x%2==1) | ^ main.cpp:59:39: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 59 | if(ok==1&&reuniune.count()==n) | ~~~~~~~~~~~~~~~~^~~