oj.uz

Submission #132574

# Submission time Handle Problem Language Result Execution time Memory
132574 2019-07-19T07:37:29 Z tmwilliamlin168 Dancing Elephants (IOI11_elephants) C++14
100 / 100
 7899 ms 17096 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;

const int mxN=1.5e5, B=300, mxBC=(mxN-1)/B+1;
int n, l, *x, uc, bc, r[mxBC];
map<int, int> mp;
vector<int> v[mxBC];
vector<array<int, 2>> w[mxBC];

void init(int N, int L, int X[]) {
	n=N;
	l=L;
	x=X;
	for(int i=0; i<n; ++i)
		++mp[x[i]];
}

void bb(int i) {
	w[i]=vector<array<int, 2>>(v[i].size());
	for(int j1=(int)v[i].size()-1, j2=v[i].size(); ~j1; --j1) {
		while(v[i][j2-1]>v[i][j1]+l)
			--j2;
		w[i][j1]=j2<v[i].size()?array<int, 2>{w[i][j2][0]+1, w[i][j2][1]}:array<int, 2>{1, v[i][j1]+l};
	}
}
void bld() {
	bc=0;
	for(pair<int, int> p : mp) {
		if(!bc||v[bc-1].size()>=B)
			v[bc++].clear();
		v[bc-1].push_back(p.first);
	}
	for(int i=0; i<bc; ++i) {
		r[i]=i+1<bc?v[i+1][0]-1:1e9;
		bb(i);
	}
}

void upd(int x, bool a) {
	int c=-1;
	while(x>r[++c]);
	int p=lower_bound(v[c].begin(), v[c].end(), x)-v[c].begin();
	if(a)
		v[c].insert(v[c].begin()+p, x);
	else
		v[c].erase(v[c].begin()+p);
	bb(c);
}

int update(int i, int y) {
	if(uc++%B==0)
		bld();
	--mp[x[i]];
	if(!mp[x[i]]) {
		upd(x[i], 0);
		mp.erase(x[i]);
	}
	if(!mp[y])
		upd(y, 1);
	++mp[y];
	x[i]=y;
	int a=0;
	for(int i=0, c=-1; i<bc; ++i) {
		int p=upper_bound(v[i].begin(), v[i].end(), c)-v[i].begin();
		if(p<v[i].size()) {
			a+=w[i][p][0];
			c=w[i][p][1];
		}
	}
	return a;
}

Compilation message

elephants.cpp: In function 'void bb(int)':
elephants.cpp:24:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   w[i][j1]=j2<v[i].size()?array<int, 2>{w[i][j2][0]+1, w[i][j2][1]}:array<int, 2>{1, v[i][j1]+l};
            ~~^~~~~~~~~~~~
elephants.cpp: In function 'int update(int, int)':
elephants.cpp:66:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(p<v[i].size()) {
      ~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 304 ms 1964 KB Output is correct
8 Correct 339 ms 3156 KB Output is correct
9 Correct 490 ms 5880 KB Output is correct
10 Correct 438 ms 5624 KB Output is correct
11 Correct 488 ms 5564 KB Output is correct
12 Correct 840 ms 5804 KB Output is correct
13 Correct 443 ms 5496 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 304 ms 1964 KB Output is correct
8 Correct 339 ms 3156 KB Output is correct
9 Correct 490 ms 5880 KB Output is correct
10 Correct 438 ms 5624 KB Output is correct
11 Correct 488 ms 5564 KB Output is correct
12 Correct 840 ms 5804 KB Output is correct
13 Correct 443 ms 5496 KB Output is correct
14 Correct 246 ms 3964 KB Output is correct
15 Correct 548 ms 4200 KB Output is correct
16 Correct 1262 ms 6264 KB Output is correct
17 Correct 1559 ms 8100 KB Output is correct
18 Correct 1630 ms 7904 KB Output is correct
19 Correct 890 ms 8004 KB Output is correct
20 Correct 1693 ms 8076 KB Output is correct
21 Correct 1570 ms 7932 KB Output is correct
22 Correct 853 ms 7424 KB Output is correct

Subtask #5
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 304 ms 1964 KB Output is correct
8 Correct 339 ms 3156 KB Output is correct
9 Correct 490 ms 5880 KB Output is correct
10 Correct 438 ms 5624 KB Output is correct
11 Correct 488 ms 5564 KB Output is correct
12 Correct 840 ms 5804 KB Output is correct
13 Correct 443 ms 5496 KB Output is correct
14 Correct 246 ms 3964 KB Output is correct
15 Correct 548 ms 4200 KB Output is correct
16 Correct 1262 ms 6264 KB Output is correct
17 Correct 1559 ms 8100 KB Output is correct
18 Correct 1630 ms 7904 KB Output is correct
19 Correct 890 ms 8004 KB Output is correct
20 Correct 1693 ms 8076 KB Output is correct
21 Correct 1570 ms 7932 KB Output is correct
22 Correct 853 ms 7424 KB Output is correct
23 Correct 5522 ms 17028 KB Output is correct
24 Correct 5238 ms 17064 KB Output is correct
25 Correct 4661 ms 17024 KB Output is correct
26 Correct 4869 ms 17048 KB Output is correct
27 Correct 4969 ms 16900 KB Output is correct
28 Correct 1352 ms 5780 KB Output is correct
29 Correct 1289 ms 5644 KB Output is correct
30 Correct 1349 ms 5680 KB Output is correct
31 Correct 1282 ms 5528 KB Output is correct
32 Correct 5350 ms 16484 KB Output is correct
33 Correct 1806 ms 16128 KB Output is correct
34 Correct 4308 ms 16692 KB Output is correct
35 Correct 1798 ms 17096 KB Output is correct
36 Correct 79 ms 7368 KB Output is correct
37 Correct 3325 ms 16948 KB Output is correct
38 Correct 4296 ms 15736 KB Output is correct
39 Correct 4053 ms 16632 KB Output is correct
40 Correct 4437 ms 15712 KB Output is correct
41 Correct 7599 ms 16668 KB Output is correct
42 Correct 7899 ms 16960 KB Output is correct