Cod sursa(job #2039589)

Utilizator stahlhelmVirtejaru Mihai stahlhelm Data 14 octombrie 2017 18:03:34
Problema Aria Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.33 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
ifstream f("aria.in");
ofstream c("aria.out");
int main()
{ long x[10*10*10*10*10],y[10*10*10*10*10],N,i,s=0,A;
f>>N;
for(i=1;i<=N;i++)
f>>x[i]>>y[i];
x[N+1]=x[1];
y[N+1]=y[1];
for(i=1;i<=N;i++)
s=s+x[i]*y[i+1]-x[i+1]*y[i];


c<<s/2;
}