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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#59807#2838. 2D GeometryScarlett_boyWA 2ms3724kbC++141.9kb2022-11-01 15:49:272022-11-01 15:49:30

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.
  • [2022-11-01 15:49:30]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:3724kb
  • [2022-11-01 15:49:27]
  • 提交

answer

#include<bits/stdc++.h>

typedef long long ll;
using namespace std;
const int N = 1e6 + 10;
const int inf = 0x3f3f3f3f;
const ll INF = 0x3f3f3f3f3f3f3f3f;
const int mod = 1e9 + 7;

char nc() {
    static char buf[1000000], *p = buf, *q = buf;
    return p == q && (q = (p = buf) + fread(buf, 1, 1000000, stdin), p == q) ? EOF : *p++;
}

inline ll read() {
    ll x = 0;
    int f = 1;
    char ch = getchar();
    while (!isdigit(ch)) {
        if (ch == '-')f = -1;
        ch = getchar();
    }
    while (isdigit(ch)) {
        x = (x << 1) + (x << 3) + (ch ^ 48);
        ch = getchar();
    }
    return x * f;
}

int n;
struct Point {
    ll x, y;
} s[N];


int vis[N];

int calc(int j) {
    int now = 0;
    map<pair<ll, ll>, int> mp;
    for (int i = 1; i <= n; i++) {
        if (i == j) continue;
        int X = s[i].x - s[j].x, Y = s[i].y - s[j].y;
        if (X < 0) {
            X = -X;
            Y = -Y;
        } else if (X == 0) {
            if (Y < 0) Y = -Y;
        }
        mp[make_pair(X, Y)]++;
    }
//    printf("j=%d:\n", j);
    for (auto to: mp) {
        now = max(now, to.second + 1);
//        printf(" NOW = %d\n", to.second + 1);
    }
    return now;
}

void solve() {
    srand(time(0));
    for (int i = 1; i <= n; i++) vis[i] = 0;
    for (int i = 1; i <= n; i++) s[i].x = read(), s[i].y = read();
    int T = min(n, 50);
    int now = 0;
    while (T--) {
        int x = rand() % n + 1;
        while (vis[x]) x = rand() % n + 1;
        vis[x] = 1;
        now = max(now, calc(x));
    }
    int last = n - now;
    if (now > last * 2) {
        printf("%d\n", now - last * 2);
    } else {
        printf("%d\n", n % 3);
    }
}

signed main() {
//    int t = read();
//    while (t--)
    while (scanf("%d", &n) != EOF)
        solve();
    return 0;
}
/*
1
1
1
1
 */

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3724kb

input:

3
0 0
0 1
0 2
3
0 0
0 1
1 0
6
0 0
0 1
0 2
0 3
1 1
1 2

output:

3
0
0

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 2ms
memory: 3568kb

input:

1
0 0
2
0 0
1 1
3
0 0
0 1
0 2
3
0 0
0 1
1 0
4
3 0
0 2
3 3
3 1
4
2 3
1 1
0 3
0 2
4
0 0
0 3
0 2
0 1
5
8 6
9 2
2 3
7 4
1 5
5
2 2
4 2
6 2
7 2
0 4
5
3 7
5 4
4 4
9 4
9 9
5
5 4
5 9
5 5
4 3
1 0
5
3 2
1 2
7 2
6 2
5 2
6
7 2
7 9
0 3
8 8
4 4
3 8
6
2 8
2 5
3 5
3 8
2 0
0 2
6
2 3
8 4
2 9
2 2
2 6
4 9
6
2 1
7 6
6 5
...

output:

1
2
3
0
1
1
1
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0

result:

wrong answer 7th lines differ - expected: '4', found: '1'