POJ1840——哈希——Eqs

http://poj.org/problem?id=1840

/*

*/
/************************************************
* Author        :Powatr
* Created Time  :2015-9-1 16:03:34
* File Name     :
 ************************************************/

#include <cstdio>
#include <algorithm>
#include <iostream>
#include <sstream>
#include <cstring>
#include <cmath>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <list>
#include <map>
#include <set>
#include <bitset>
#include <cstdlib>
#include <ctime>
using namespace std;

#define lson l, mid, rt << 1
#define rson mid + 1, r, rt << 1 | 1
typedef long long ll;
const int MAXN = 2e7+5e6 ;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;

short int a[MAXN];
int b[6];
int main(){
    for(int i = 1; i <= 5; i++)
        scanf("%d", &b[i]);
    memset(a, 0, sizeof(a));
    ll sum;
    for(int i = -50; i <= 50; i++){
        for(int j = -50; j <= 50; j++){
            for(int k = -50; k <= 50; k++){
                if(i == 0 || j == 0 || k == 0) continue;
                sum = -1*(i*i*i*b[1] + j*j*j*b[2] + k*k*k*b[3]);
                if(sum < 0) 
                sum += MAXN;
                a[sum]++;
            }
        }
    }
    int cout = 0;
    for(int i = -50; i <= 50; i++){
        for(int j = -50; j <= 50; j++){
            if(i == 0 || j == 0) continue;
            sum = i*i*i*b[4] + j*j*j*b[5] ;
            if(sum < 0) sum += MAXN;
            if(a[sum]) cout+=a[sum];
        }
    }
    printf("%d
", cout);
return 0;
}