OJ-Problems-Source/HDOJ/2351_autoAC.cpp
2016-08-22 00:13:12 +08:00

126 lines
3.4 KiB
C++

#include <stack>
#include <cstdio>
#include <list>
#include <set>
#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <functional>
#include <cstring>
#include <algorithm>
#include <cctype>
#include <string>
#include <map>
#include <cmath>
using namespace std;
#define LL long long
#define ULL unsigned long long
#define SZ(x) (int)x.size()
#define Lowbit(x) ((x) & (-x))
#define MP(a, b) make_pair(a, b)
#define MS(arr, num) memset(arr, num, sizeof(arr))
#define PB push_back
#define X first
#define Y second
#define MID(a, b) (a + ((b - a) >> 1))
#define LC rt << 1, l, mid
#define RC rt << 1|1, mid + 1, r
#define LRT rt << 1
#define RRT rt << 1|1
const double PI = acos(-1.0);
const int INF = 0x3f3f3f3f;
const double eps = 1e-8;
const int MAXN = 110;
const int MOD = 1e9 + 7;
const int dir[][2] = { {-1, 0}, {0, -1}, { 1, 0 }, { 0, 1 } };
int cases = 0;
typedef pair<int, int> pii;
struct NUM
{
int sum, multiple, num, square, cube, quad;
}arr[MAXN];
void Handle(NUM &num)
{
int tmp = num.num, curNum = num.num;
int sum = 0, multiple = 1;
while (tmp)
{
sum += tmp % 10;
multiple *= tmp % 10;
tmp /= 10;
}
num.sum = sum; num.multiple = multiple;
num.square = curNum <= 1000 ? curNum*curNum : -1;
num.quad = curNum <= 100 ? curNum*curNum*curNum*curNum : -1;
num.cube = curNum <= 100 ? curNum*curNum*curNum : -1;
}
set<int> cube, square, quad;
int ansCnt;
void Init()
{
for (int i = 1; i <= 1000; i++)
{
square.insert(i*i);
if (i <= 100) cube.insert(i*i*i), quad.insert(i*i*i*i);
}
}
bool isPrime(int num)
{
if (num == 1) return false;
if (num == 2) return true;
for (int i = 2; i <= (int)sqrt(num+0.5); i++)
if (num % i == 0) return false;
return true;
}
int n, cnt[MAXN];
void Solve(const int &cur)
{
cnt[cur] = 0;
int curNum = arr[cur].num;
const NUM &num = arr[cur];
for (int i = 0; i < n; i++)
{
if (i == cur) continue;
NUM &k = arr[i];
if (k.num % curNum == 0) cnt[cur]++;
if (curNum % k.num == 0) cnt[cur]++;
if (k.square == curNum) cnt[cur]++;
if (k.cube == curNum) cnt[cur]++;
if (k.quad == curNum) cnt[cur]++;
if (curNum % k.sum == 0) cnt[cur]++;
if (k.multiple != 0 && curNum % k.multiple == 0) cnt[cur]++;
}
if (square.count(curNum)) cnt[cur]++;
if (cube.count(curNum)) cnt[cur]++;
if (quad.count(curNum)) cnt[cur]++;
if (curNum % num.sum == 0) cnt[cur]++;
if (num.multiple != 0 && curNum % num.multiple == 0) cnt[cur]++;
if (isPrime(curNum)) cnt[cur]++;
ansCnt = max(ansCnt, cnt[cur]);
}
int main()
{
Init();
int T;
scanf("%d", &T);
while (T--)
{
ansCnt = -1;
scanf("%d", &n);
for (int i = 0; i < n; i++)
{
scanf("%d", &arr[i].num);
Handle(arr[i]);
}
for (int i = 0; i < n; i++) Solve(i);
vector<int> ans;
for (int i = 0; i < n; i++)
if (ansCnt == cnt[i]) ans.PB(arr[i].num);
sort(ans.begin(), ans.end());
printf("DATA SET #%d\n", ++cases);
for (int i = 0; i < SZ(ans); i++) printf("%d\n", ans[i]);
}
return 0;
}