제출 #600062

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
600062		OttoTheDino	Mixture (BOI20_mixture)	C++17	0 / 100	1 ms	324 KiB

Mixture

#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (int i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
#define len(a)                      (int)a.size()
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

const double eps = 1e-5, pi = acos(-1);

bool eq (double a, double b) {
    return abs(a-b)<=eps;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    double S, P, G; cin >> S >> P >> G;

    double X = S/(S+P+G), Y = P/(S+P+G);

    int n; cin >>n;

    int id = 1, a=0,b=0, bud[n+1] = {}, p[n+1] = {};
    multiset<double> st3; 
    set<pair<double,int>> st2;
    double ang[n+1] = {};

    rep (i,1,n) {
        char tp; cin >> tp;
        if (tp=='A') {
            double Si, Pi, Gi;
            cin >> Si >> Pi >> Gi;
            double x = Si/(Si+Pi+Gi), y = Pi/(Si+Pi+Gi);
            if (eq(X,x) && eq(Y,y)) {
                a++;
                p[id] = 1;
            }
            else {
                ang[id] = fmod(pi+atan2(y-Y, x-X),2*pi);
                st3.insert(ang[id]);
                auto it = st2.lower_bound({fmod(ang[id]+pi,2*pi), 0});
                if (it!=st2.end() && eq((*it).fi,fmod(ang[id]+pi,2*pi))) {
                    bud[id] = (*it).se;
                    bud[(*it).se] = id;
                    st2.erase(it);
                    b++;
                }
                else st2.insert({ang[id],id});
            }
            ++id;
        }
        else {
            int x; cin >> x;
            st3.erase(ang[x]);
            a -= p[x];
            if (bud[x]) {
                bud[bud[x]] = 0;
                b--;

                auto it = st2.lower_bound({fmod(ang[bud[x]]+pi,2*pi), 0});
                

                if (it!=st2.end() && eq((*it).fi,ang[bud[x]])) {
                    bud[bud[x]] = (*it).se;
                    bud[(*it).se] = bud[x];
                    st2.erase(it);
                    b++;
                }
                else st2.insert({ang[bud[x]],bud[x]});

                bud[x] = 0;
            }
        }

        bool c = 0;
        if (len(st3)>2) {
            double un = (*st3.begin());
            double dos = (*--st3.upper_bound(un+pi+eps));
            double tres = (*--st3.upper_bound(dos+pi+eps));
            if (min(dos-un,min(tres-dos,2*pi-un-tres))<=pi+eps) c = 1; 
        }


        if (a) cout << "1\n";
        else if (b) cout << "2\n";
        else if (c) cout << "3\n";
        else cout << "0\n";
    }

    return 0;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 17
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40