제출 #1294370

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1294370		pecorine	Balloons (CEOI11_bal)	C++20	20 / 100	2096 ms	3676 KiB

bal

#include <bits/stdc++.h> // clang-format off
#define princess_connect(file,extention) if(fopen(file "." extention, "r")) freopen(file "." extention, "r", stdin)
#define yabai_desune ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define __Pecorine__ signed main()
#define For(i, l, r) for (int i = l; i <= r; i++)
#define Fod(i, r, l) for (int i = r; i >= l; i--)
#define ll long long
#define pb push_back
#define sz(yuuki) (int)yuuki.size()
#define bit(x, i) (x >> i) & 1
#define endl "\n"
using namespace std;/* //
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠙⠻⠟⠛⠻⢿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣯⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡆⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿
⣿⣿⣿⡟⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣀⠀⢸⣿
⣿⡄⠀⠀⠀⠀⠀⠻⠿⣿⣿⣿⣿⣿⡷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣼⣿⣿⣿
⣿⣷⡀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠛⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿
⣿⣿⣿⣷⣶⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿⣿⣿
⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠋⣉⣽
⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⣿
⣿⣿⣿⣿⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣿
*/ // clang-format on
const int inf = 2e9;
const int mxn = 2 * 1e5 + 7;
const int mod = 1e9 + 7;

int n;
vector<pair<ll, ll>> a(mxn);
vector<pair<ll, ll>> res;

ll calc(const pair<ll, ll> &x, const pair<ll, ll> &y) {
    ll l = 0;
    ll r = y.second;
    while (l < r) {
        ll m = (r + l) / 2 + 1;
        long double a = abs(x.second - m) / 1000.0;
        long double b = (y.first - x.first) / 1000.0;
        long double c = sqrtl(a * a + b * b);
        if (x.second + m <= 1LL * c * 1000) {
            l = m;
        } else {
            r = m - 1;
        }
    }
    return l;
}

__Pecorine__ {
    yabai_desune;
    princess_connect("yabai", "desune");
    cin >> n;
    For(i, 1, n) cin >> a[i].first >> a[i].second;

    For(i, 1, n) {
        a[i].first *= 1000;
        a[i].second *= 1000;
    }

    sort(a.begin() + 1, a.begin() + 1 + n);

    For(i, 1, n) {
        // while (sz(res) && res.back().first + res.back().second <= a[i].first - a[i].second) {
        //     res.pop_back();
        // }
        For(j, 0, sz(res) - 1) {
            a[i].second = min(a[i].second, calc(res[j], a[i]));
        }
        res.pb(a[i]);
    }
    For(i, 1, n) {
        cout << fixed << setprecision(3) << a[i].second / 1000.0 << endl;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

bal.cpp: In function 'int main()':
bal.cpp:2:84: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define princess_connect(file,extention) if(fopen(file "." extention, "r")) freopen(file "." extention, "r", stdin)
      |                                                                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bal.cpp:58:5: note: in expansion of macro 'princess_connect'
   58 |     princess_connect("yabai", "desune");
      |     ^~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10