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답안 #150623

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
150623 2019-09-01T08:44:08 Z Seishun Buta Yarou wa Yumemiru Shoujo no Yume wo Minai(#3781, zscoder, tmwilliamlin168) 최적의 팀 구성 (FXCUP4_squad) C++17
19 / 100
 3000 ms 524288 KB 
#include "squad.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

bool cmp(int a0, int a1, int b0, int b1) {
	return (ll)a0*b1<(ll)b0*a1;
}

struct cht {
	int a[1<<18], b[1<<18], qt;
	ar<int, 2> l[1<<18];
	vector<ar<int, 4>> m;
	void al(int c, int d) {
		while(qt&&c==a[qt-1]||qt>1&&(ll)(b[qt-1]-b[qt-2])*(a[qt-1]-c)>=(ll)(d-b[qt-1])*(a[qt-2]-a[qt-1]))
			--qt;
		a[qt]=c;
		b[qt]=d;
		++qt;
	}
	void cl() {
		for(int i=0; i+1<qt; ++i)
			l[i]={b[i]-b[i+1], a[i+1]-a[i]};
		l[qt-1]={1<<30, 1};
	}
	void cm(vector<ar<int, 4>> &v) {
		for(int i=0, j=0; i<qt||j<v.size(); ) {
			if(j>=v.size()||i<qt&&cmp(l[i][0], l[i][1], v[j][0], v[j][1])) {
				m.push_back({l[i][0], l[i][1], i, 2*j+1});
				++i;
			} else {
				m.push_back({v[j][0], v[j][1], i, 2*j+1});
				++j;
			}
		}
		//for(ar<int, 4> mi : m)
			//cout << "{" << mi[0] << " " << mi[1] << " " << mi[2] << " " << mi[3] << "} ";
		//cout << endl;
	}
} c[76];

int n, k, q[300000];

void Init(vector<int> a, vector<int> d, vector<int> p) {
	n=a.size();
	while(1<<k<n)
		++k;
	iota(q, q+n, 0);
	sort(q, q+n, [&](const int &i, const int &j) {
		return ar<int, 2>{a[i], p[i]}<ar<int, 2>{a[j], p[j]};
	});
	for(int i=0; i<n; ++i)
		for(int j=0; j<k; ++j)
			c[j*4+(q[i]>>j&1)].al(a[q[i]], p[q[i]]);
	sort(q, q+n, [&](const int &i, const int &j) {
		return ar<int, 2>{d[i], p[i]}<ar<int, 2>{d[j], p[j]};
	});
	for(int i=0; i<n; ++i)
		for(int j=0; j<k; ++j)
			c[j*4+2+(q[i]>>j&1)].al(d[q[i]], p[q[i]]);
	//cout << "hi0" << endl;
	for(int i=0; i<k*4; ++i) {
		c[i].cl();
	}
	//cout << "hi1" << endl;
	for(int i=k*4-1; ~i; --i) {
		vector<ar<int, 4>> v;
		if(i+1<k*4)
			for(int j=1; j<c[i+1].m.size(); j+=2)
				v.push_back(c[i+1].m[j]);
		c[i].cm(v);
	}
	//cout << "hi2" << endl;
}

ll BestSquad(int x, int y) {
	//cout << "bs " << x << " " << y << endl;
	ll ans=0, d[k*4];
	//for(int i=0; i<k*4; ++i)
		//d[i]=c[i].qry(x, y);
	//frucktional cascading
	int lb=1, rb=c[0].m.size()-1;
	while(lb<rb) {
		int mb=(lb+rb)/2;
		if(!cmp(c[0].m[mb][0], c[0].m[mb][1], x, y))
			rb=mb;
		else
			lb=mb+1;
	}
	//cout << "hi3 " << lb << endl;
	for(int i=0; i<k*4; ++i) {
		if(!cmp(c[i].m[lb-1][0], c[i].m[lb-1][1], x, y))
			--lb;
		//cout << i << " " << lb << endl;
		int j=c[i].m[lb][2];
		//cout << j << endl;
		lb=c[i].m[lb][3];
		d[i]=(ll)x*c[i].a[j]+(ll)y*c[i].b[j];
	}
	for(int i=0; i<k; ++i) {
		//ans=max(ans, ca[i][0].qry(x, y)+cd[i][1].qry(x, y));
		//ans=max(ans, cd[i][0].qry(x, y)+ca[i][1].qry(x, y));
		ans=max(ans, d[i*4]+d[i*4+3]);
		ans=max(ans, d[i*4+1]+d[i*4+2]);
	}
	return ans;
}

Compilation message

squad.cpp: In member function 'void cht::al(int, int)':
squad.cpp:17:11: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   while(qt&&c==a[qt-1]||qt>1&&(ll)(b[qt-1]-b[qt-2])*(a[qt-1]-c)>=(ll)(d-b[qt-1])*(a[qt-2]-a[qt-1]))
         ~~^~~~~~~~~~~~
squad.cpp: In member function 'void cht::cm(std::vector<std::array<int, 4> >&)':
squad.cpp:29:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0, j=0; i<qt||j<v.size(); ) {
                           ~^~~~~~~~~
squad.cpp:30:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(j>=v.size()||i<qt&&cmp(l[i][0], l[i][1], v[j][0], v[j][1])) {
       ~^~~~~~~~~~
squad.cpp:30:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(j>=v.size()||i<qt&&cmp(l[i][0], l[i][1], v[j][0], v[j][1])) {
                    ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
squad.cpp: In function 'void Init(std::vector<int>, std::vector<int>, std::vector<int>)':
squad.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=1; j<c[i+1].m.size(); j+=2)
                 ~^~~~~~~~~~~~~~~~

Subtask #1
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 1024 KB Output is correct
2 Correct 8 ms 1536 KB Output is correct
3 Correct 760 ms 10232 KB Output is correct
4 Correct 823 ms 10232 KB Output is correct
5 Correct 69 ms 30612 KB Output is correct
6 Correct 1436 ms 524288 KB Output is correct
7 Correct 1473 ms 524288 KB Output is correct
8 Correct 1359 ms 524288 KB Output is correct

Subtask #2
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 1152 KB Output is correct
2 Correct 16 ms 1664 KB Output is correct
3 Correct 1496 ms 12492 KB Output is correct
4 Correct 1411 ms 12468 KB Output is correct
5 Correct 136 ms 11700 KB Output is correct
6 Execution timed out 3116 ms 302420 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 1024 KB Output is correct
2 Correct 8 ms 1536 KB Output is correct
3 Correct 760 ms 10232 KB Output is correct
4 Correct 823 ms 10232 KB Output is correct
5 Correct 69 ms 30612 KB Output is correct
6 Correct 1436 ms 524288 KB Output is correct
7 Correct 1473 ms 524288 KB Output is correct
8 Correct 1359 ms 524288 KB Output is correct
9 Correct 6 ms 1152 KB Output is correct
10 Correct 16 ms 1664 KB Output is correct
11 Correct 1496 ms 12492 KB Output is correct
12 Correct 1411 ms 12468 KB Output is correct
13 Correct 136 ms 11700 KB Output is correct
14 Execution timed out 3116 ms 302420 KB Time limit exceeded
15 Halted 0 ms 0 KB -