Compilare: user.cpp:26:17: warning: multi-character character constant [-Wmultichar] if (s<e) g<<'-1'; ^ user.cpp: In function ‘int main()’: user.cpp:16:45: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for (i=1;i<=e;i++) d[0][j]=d[j][0]=int(1<<31-1); ^ user.cpp: In function ‘int mini(int, int)’: user.cpp:9:1: warning: control reaches end of non-void function [-Wreturn-type] } ^