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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#89350#5251. ConstellationsmolarsuWA 8457ms199512kbC++201.6kb2023-03-19 20:35:482023-03-19 20:35:50

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-03-19 20:35:50]
  • 评测
  • 测评结果:WA
  • 用时:8457ms
  • 内存:199512kb
  • [2023-03-19 20:35:48]
  • 提交

answer

#include<bits/stdc++.h>
#define ri register int
#define fu(i, a, b) for(ri i = (a), ed = (b); i <= ed; ++i)
#define fd(i, a, b) for(ri i = (a), ed = (b); i >= ed; --i)
using namespace std;
#define int long long
const int N = 5e3 + 5;
const double eps = 1e-3;
const int INF = 0x3f3f3f3f3f3f3f3f;
int read() {
	int f = 1, x = 0; char ch = getchar();
	while (ch > '9' || ch < '0') { if (ch == '-')f = -1; ch = getchar(); }
	while (ch <= '9' && ch >= '0') { x = (x << 1) + (x << 3) + (ch ^ 48);  ch = getchar(); }
	return x * f;
}

int dis[N][N];
struct Node {
	int x, y, rk, sz;
}a[N];
bool vis[N];

signed main() {
	int n = read();
	vector<int> vec;
	fu(i, 1, n) a[i].x = read(), a[i].y = read(), a[i].rk = i, a[i].sz = 1, vec.push_back(i);
	memset(dis, 0x3f, sizeof dis);
	fu(i, 1, n) fu(j, 1, n) dis[i][j] = (a[i].x - a[j].x) * (a[i].x - a[j].x) + (a[i].y - a[j].y) * (a[i].y - a[j].y);
	int tot = n;
	fd(_, n - 1, 1) {
		int x = -1, y = -1;
		int mi = INF;
		fu(i, 0, signed (vec.size()) - 1) {
			int u = vec[i];
			fu(j, i + 1, signed (vec.size()) - 1) {
				int v = vec[j];
				if(x == -1 && y == -1)x = i, y = j, mi = dis[u][v];
				else if (dis[u][v] * a[vec[x]].sz * a[vec[y]].sz < mi * a[u].sz * a[v].sz) x = i, y = j, mi = dis[u][v];
			}
		}
		//cout << x << ' ' << y << endl;
		tot++;
		int u = vec[x], v = vec[y];
		a[tot].sz = a[u].sz + a[v].sz;
		
		vec.erase(vec.begin() + y);
		vec.erase(vec.begin() + x);
		fu(i, 0, signed(vec.size()) - 1) {
			int now = a[vec[i]].rk;
			dis[now][tot] = dis[tot][now] = dis[now][u] + dis[now][v];
		}
		
		vec.push_back(tot);
		printf("%lld\n", a[tot].sz);

	}
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 32ms
memory: 199240kb

input:

2
0 0
1 0

output:

2

result:

ok single line: '2'

Test #2:

score: -100
Wrong Answer
time: 8457ms
memory: 199512kb

input:

2000
1000 -1000
1000 -999
1000 -998
1000 -997
1000 -996
1000 -995
1000 -994
1000 -993
1000 -992
1000 -991
1000 -990
1000 -989
1000 -988
1000 -987
1000 -986
1000 -985
1000 -984
1000 -983
1000 -982
1000 -981
1000 -980
1000 -979
1000 -978
1000 -977
1000 -976
1000 -975
1000 -974
1000 -973
1000 -972
1000...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
...

result:

wrong answer 1753rd lines differ - expected: '16', found: '32'