比赛 |
NOIP2008集训模拟2 |
评测结果 |
AAAAAAAAAAAAAAAAAAAA |
题目名称 |
沙漠赛道 |
最终得分 |
100 |
用户昵称 |
王瑞祥K |
运行时间 |
0.000 s |
代码语言 |
Pascal |
内存使用 |
0.00 MiB |
提交时间 |
2008-11-11 10:17:30 |
显示代码纯文本
program mirage(input,output);
var
an,ay,bn,by,wa,wb,k,zhua,zhub,zong,zaw,zbw,zp,la,lb,qw:real;
zhu:array[1..100000]of real;
da,db,n,i,j:longint;
begin
assign(input,'mirage.in');assign(output,'mirage.out');
reset(input);rewrite(output);
an:=1;
for i:=1 to 4 do begin read(k); an:=an*(1-k); end;
readln;
bn:=1;
for i:=1 to 4 do begin read(k); bn:=bn*(1-k); end;
readln;
ay:=1-an; by:=1-bn;
readln(da,db);
wa:=da/(da+db); wb:=db/(da+db);
readln(n);
zong:=1;zhua:=0;zhub:=0;
for i:=1 to n do begin
readln(zhu[i],j);
if j=0 then zhua:=zhua+zhu[i] else zhub:=zhub+zhu[i];
end;
zaw:=an*bn*wa+an*by; zbw:=an*bn*wb+bn*ay; zp:=ay*by;
la:=zhub-zhua; lb:=zhua-zhub;
zong:=1;
for i:=1 to n do
zong:=zong*exp(ln(zhu[i])/n);
zong:=zhua+zhub-zong*n;
qw:=la*zaw+lb*zbw+zp*zong;
writeln(zaw:0:2,' ',zbw:0:2,' ',zp:0:2);
write(qw:0:2);
close(input);close(output);
end.