Online Judge System For SzNOI 题库 语法百题 c++ d036
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#include <stdio.h>
int main(){
float a,b,c,d;
scanf("%f %f %f %f",&a,&b,&c,&d);
a=1/a;
b=1/b;
c=1/c;
d=1/d;
float s1,s2;
s1=1/(a+b);
s2=1/(a+b+c+d);
printf("%.2f\n%.2f\n",s1,s2);
}
int main(){
float a,b,c,d;
scanf("%f %f %f %f",&a,&b,&c,&d);
a=1/a;
b=1/b;
c=1/c;
d=1/d;
float s1,s2;
s1=1/(a+b);
s2=1/(a+b+c+d);
printf("%.2f\n%.2f\n",s1,s2);
}
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