[UVa] 10302 - Summation of Polynomials

題目網址: https://goo.gl/GxsoXV

題意:
(from luckycat)


解法:
帶和公式，
證明於此 http://www.funlearn.tw/viewthread.php?tid=1956。

TAG: Math

注意:

程式碼:

	/**
	* Tittle: 10302 - Summation of Polynomials
	* Author: Cheng-Shih, Wong
	* Date: 2015/06/11
	*/
	// include files
	#include <bits/stdc++.h>
	using namespace std;
	// definitions
	#define FOR(i,a,b) for( int i=(a),_n=(b); i<=_n; ++i )
	#define clr(x,v) memset( x, v, sizeof(x) )
	typedef long long ll;
	// declarations
	ll n;
	// functions
	// main function
	int main( void )
	{
	// input
	while( scanf( "%lld", &n )==1 ) {
	printf( "%lld\n", (n*n*(n+1)*(n+1))/4 );
	}
	return 0;
	}

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