Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<fstream> | ^~~~~~ main.cpp: In function 'int a(int)': main.cpp:2:149: warning: no return statement in function returning non-void [-Wreturn-type] 2 | std::ifstream f("scmax.in");std::ofstream g("scmax.out");int v[1<<20],p[1<<20],q[9999],i,j,Q;int a(int Z){while(p[--Z]!=Q);if(--Q)a(Z);g<<v[Z]<<" ";} | ^ main.cpp: At global scope: main.cpp:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 3 | main(){f>>j;for(;f>>v[i];q[j]=v[i++]){for(j=0;v[i]>q[j]&j<=Q;p[i]=++j);Q+=j>Q;}g<<Q<<" ";a(i);} | ^~~~ main.cpp: In function 'int main()': main.cpp:3:51: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 3 | main(){f>>j;for(;f>>v[i];q[j]=v[i++]){for(j=0;v[i]>q[j]&j<=Q;p[i]=++j);Q+=j>Q;}g<<Q<<" ";a(i);} | ~~~~^~~~~