import std.stdio;
import std.algorithm.comparison;
import std.conv;
int main() {
auto i=signed(0);
auto CUTOFF = 50;
auto m = (max(0, i - CUTOFF));
writeln(m);
return 0;
}
aW1wb3J0IHN0ZC5zdGRpbzsKaW1wb3J0IHN0ZC5hbGdvcml0aG0uY29tcGFyaXNvbjsKaW1wb3J0IHN0ZC5jb252OwoKaW50IG1haW4oKSB7CiAgYXV0byBpPXNpZ25lZCgwKTsKICBhdXRvIENVVE9GRiA9IDUwOwogIGF1dG8gbSA9IChtYXgoMCwgaSAtIENVVE9GRikpOwogIHdyaXRlbG4obSk7CiAgcmV0dXJuIDA7Cn0K