Compilare: user.cpp: In function ‘int main()’: user.cpp:49:46: warning: narrowing conversion of ‘a’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] x = 1, Q.push_back ({a, b, 1}); ^ user.cpp:49:46: warning: narrowing conversion of ‘b’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:73:45: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q.push_back ({i, Y.y, 2}); ^ user.cpp:80:45: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q.push_back ({Y.x, i, 1}); ^ user.cpp:39:18: warning: unused variable ‘j’ [-Wunused-variable] int N, M, i, j, a, b, x = 0, y; ^ user.cpp:40:11: warning: variable ‘X’ set but not used [-Wunused-but-set-variable] punct X, Y; ^