Submission #1381478

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Source Code Expand

#include<iostream>
#include <string>
#include <iomanip>
#include <vector>
#include <queue>
#include <math.h>
#include <algorithm>
#include <functional>
#include <set> 
#include <map> 

using namespace std;
#define int long long
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) for (int i=0;i<(n);i++)

signed main()
{
	int a, b, h;
	cin >> a >> b >> h;
	cout << (a + b)*h / 2 << endl;
}

Submission Info

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