归类了 OJ,整理了一下

This commit is contained in:
Fengyi Chen
2024-02-15 22:38:30 +08:00
parent 76c1ecea65
commit 8dbc0861b2
231 changed files with 0 additions and 0 deletions

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@ -0,0 +1,13 @@
#include <iostream>
#include <iomanip>
using namespace std;
int main(){
double a;
double b;
cin >>a;
b=a*a/2.0/2.0;
printf("%.2f",b);
return 0;
}