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답안 #1109180

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1109180 2024-11-06T07:18:50 Z Gourougourou Plot (POI11_wyk) C++17
0 / 100
 30000 ms 8660 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<double,double> pll;
typedef vector<ll> vll;
typedef vector<pll> vpll;
#define x first
#define y second
const double EPS = 1e-10;


ll dist(pll a, pll b) {
    return (a.x-b.x)*(a.x-b.x) + (a.y-b.y)+(a.y-b.y);
}
pair<pll,ll> maxDist(vpll v) {
    ll ans = 0;
    pll a = {0,0};
    for (pll i : v) {
        for (pll j : v) {
            ll res = dist(i,j);
            if (res > ans) {
                ans = res;
                a = {(i.x+j.x)/2,(i.y+j.y)/2};
            }
        }
    }
    return {a,ans};
}

vpll ok(int n, int m, vpll v, ll k) {
    vpll ans;
    vpll cur;
    pll prev = {-1,-1};
    for (int i = 0; i<n; ++i) {
        cur.push_back(v[i]);
        auto p = maxDist(cur);
        if (p.y > 4*k) {
            ans.push_back(prev);
            cur = {v[i]};
        }
        prev = p.x;
    }
    if (!cur.empty()) ans.push_back(prev);
    return ans.size() <= m ? ans : vpll();
}

int main() {
    int n, m; cin >> n >> m;
    vpll v(n);
    for (pll &p : v) cin >> p.x >> p.y;
    double lo = 0, hi = 19;
    while (hi-lo > EPS) {
        double mid = (hi+lo)/2;
        if (ok(n,m,v,mid).size()) hi = mid;
        else lo = mid;
    }
    vpll ans = ok(n,m,v,hi);
    cout << fixed << setprecision(14);
    cout << sqrt(hi) << '\n';
    cout << ans.size() << '\n';
    for (pll p : ans) cout << p.x << ' ' << p.y << '\n';
}

Compilation message

wyk.cpp: In function 'vpll ok(int, int, vpll, ll)':
wyk.cpp:45:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |     return ans.size() <= m ? ans : vpll();
      |            ~~~~~~~~~~~^~~~

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #5
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #6
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 336 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #9
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 19 ms 1052 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #10
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 155 ms 4612 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #11
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 303 ms 8660 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #12
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 260 ms 8652 KB Nieprawidlowa wartosc r
2 Halted 0 ms 0 KB -

Subtask #13
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 30054 ms 5160 KB Time limit exceeded
2 Halted 0 ms 0 KB -