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归类了 OJ，整理了一下

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Fengyi Chen
2024-02-15 22:38:30 +08:00
parent 76c1ecea65
commit 8dbc0861b2
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13
XSM OJ 重庆小码王集团OJ/求面积.cpp Normal file
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#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;
}