oj.uz

답안 #872341

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
872341 2023-11-12T22:33:21 Z Cyber_Wolf Izbori (COCI22_izbori) C++17
110 / 110
 416 ms 42836 KB 
// Problem: #3 - Izbori
// Contest: DMOJ - COCI '21 Contest 4
// URL: https://dmoj.ca/problem/coci21c4p3
// Memory Limit: 512 MB
// Time Limit: 3000 ms
// 
// Powered by CP Editor (https://cpeditor.org)

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("Ofast")

using namespace std;
using namespace __gnu_pbds;

#define lg long long
#define ordered_set	tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define mid (lr+hr)/2

const lg N = 2e5+5;

lg id;
map<lg, lg> ids;

vector<lg> o[N];

lg n, a[N], fr[2*N+2], seg[(2*N+2) << 2][4];
//sum, arithmetic decreasing, lazy, assign

void doLazy(lg node, lg lr, lg hr)
{
	if(seg[node][3])
	{
		seg[node][0] = seg[node][1] = 0;
		if(lr != hr)
		{
			for(int ch = node*2; ch <= node*2+1; ch++)
			{
				seg[ch][3] |= seg[node][3];
				seg[ch][2] = 0;
			}
		}
		seg[node][3] = 0;
	}
	if(seg[node][2])
	{
		seg[node][0] += seg[node][2]*(hr-lr+1);
		lg x = (hr-lr+1)*(hr-lr+2)/2;
		seg[node][1] += x*seg[node][2];
		if(lr != hr)
		{
			for(int ch = node*2; ch <= node*2+1; ch++)
			{
				seg[ch][2] += seg[node][2];
			}
		}
		seg[node][2] = 0;
	}
	return;
}

void update(lg node, lg lr, lg hr, lg lq, lg hq, lg val)
{
	doLazy(node, lr, hr);
	if(lq > hq || lr > hq || lq > hr)	return;
	if(lq <= lr && hr <= hq)	
	{
		seg[node][2] += val;
		doLazy(node, lr, hr);
		return ;
	}
	update(node << 1, lr, mid, lq, hq, val);
	update(node << 1 | 1, mid+1, hr, lq, hq, val);
	seg[node][0] = seg[node << 1][0]+seg[node << 1 | 1][0];
	seg[node][1] = seg[node << 1][1]+seg[node << 1][0]*(hr-mid)+seg[node << 1 | 1][1];
	return;
}

lg get(lg node, lg lr, lg hr, lg lq, lg hq, lg t)
{
	if(lq > hq || lq > hr || lr > hq)	return 0;
	doLazy(node, lr, hr);
	if(lq <= lr && hr <= hq)
	{
		if(t)	
		{
			return seg[node][0]*(hq-hr)+seg[node][1];
		}
		return seg[node][0];
	}
	lg l = get(node << 1, lr, mid, lq, hq, t);
	lg r = get(node << 1 | 1, mid+1, hr, lq, hq, t);
	return l+r;
}

int main()
{
	fastio;
	cin >> n;
	for(int i = 1; i <= n; i++)	o[i].push_back(0);
	for(int i = 1; i <= n; i++)
	{
		cin >> a[i];
		if(!ids.count(a[i]))
		{
			ids[a[i]] = ++id;
		}
		a[i] = ids[a[i]];
		o[a[i]].push_back(i);
	}
	for(int i = 1; i <= n; i++)	o[i].push_back(n+1);
	lg ans = 0;
	for(int i = 1; i <= n; i++)
	{
		if(o[i].size() <= 2)	continue;
		lg lstVal = 0;
		update(1, 1, 2*n+1, n+2-o[i][1], n+1, 1);
		for(int j = 1; j+1 < o[i].size(); j++)
		{
			lstVal -= (o[i][j]-o[i][j-1]-1);
			lstVal++;
			lg st = lstVal-(o[i][j+1]-o[i][j])+1;
			ans += get(1, 1, 2*n+1, st+n+1, lstVal+n, 1);
			if(st+n)	ans += get(1, 1, 2*n+1, 1, st+n, 0)*(lstVal-st+1);
			update(1, 1, 2*n+1, st+n+1, lstVal+n+1, 1);
		}
		seg[1][3] = true;
		seg[1][2] = 0;
		doLazy(1, 1, 2*n+1);
	}
	cout << ans << '\n';

    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:120:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |   for(int j = 1; j+1 < o[i].size(); j++)
      |                  ~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8532 KB Output is correct
6 Correct 2 ms 8536 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8532 KB Output is correct
6 Correct 2 ms 8536 KB Output is correct
7 Correct 3 ms 8540 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 3 ms 8540 KB Output is correct
10 Correct 4 ms 8796 KB Output is correct
11 Correct 4 ms 8540 KB Output is correct
12 Correct 4 ms 8540 KB Output is correct
13 Correct 3 ms 8536 KB Output is correct
14 Correct 3 ms 10588 KB Output is correct
15 Correct 3 ms 8540 KB Output is correct
16 Correct 4 ms 10588 KB Output is correct
17 Correct 3 ms 8604 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 14100 KB Output is correct
2 Correct 119 ms 15532 KB Output is correct
3 Correct 55 ms 12600 KB Output is correct
4 Correct 103 ms 15912 KB Output is correct
5 Correct 106 ms 16140 KB Output is correct
6 Correct 124 ms 16492 KB Output is correct
7 Correct 129 ms 16816 KB Output is correct
8 Correct 111 ms 16724 KB Output is correct
9 Correct 114 ms 16516 KB Output is correct
10 Correct 115 ms 16380 KB Output is correct
11 Correct 100 ms 32700 KB Output is correct

Subtask #4
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8284 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8284 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8532 KB Output is correct
6 Correct 2 ms 8536 KB Output is correct
7 Correct 3 ms 8540 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 3 ms 8540 KB Output is correct
10 Correct 4 ms 8796 KB Output is correct
11 Correct 4 ms 8540 KB Output is correct
12 Correct 4 ms 8540 KB Output is correct
13 Correct 3 ms 8536 KB Output is correct
14 Correct 3 ms 10588 KB Output is correct
15 Correct 3 ms 8540 KB Output is correct
16 Correct 4 ms 10588 KB Output is correct
17 Correct 3 ms 8604 KB Output is correct
18 Correct 75 ms 14100 KB Output is correct
19 Correct 119 ms 15532 KB Output is correct
20 Correct 55 ms 12600 KB Output is correct
21 Correct 103 ms 15912 KB Output is correct
22 Correct 106 ms 16140 KB Output is correct
23 Correct 124 ms 16492 KB Output is correct
24 Correct 129 ms 16816 KB Output is correct
25 Correct 111 ms 16724 KB Output is correct
26 Correct 114 ms 16516 KB Output is correct
27 Correct 115 ms 16380 KB Output is correct
28 Correct 100 ms 32700 KB Output is correct
29 Correct 109 ms 32700 KB Output is correct
30 Correct 63 ms 16540 KB Output is correct
31 Correct 142 ms 25940 KB Output is correct
32 Correct 416 ms 42836 KB Output is correct
33 Correct 150 ms 26452 KB Output is correct
34 Correct 164 ms 26964 KB Output is correct
35 Correct 94 ms 18248 KB Output is correct
36 Correct 57 ms 15712 KB Output is correct
37 Correct 81 ms 16720 KB Output is correct
38 Correct 144 ms 26280 KB Output is correct
39 Correct 143 ms 27404 KB Output is correct
40 Correct 144 ms 26380 KB Output is correct
41 Correct 143 ms 27436 KB Output is correct
42 Correct 145 ms 26176 KB Output is correct
43 Correct 173 ms 30172 KB Output is correct
44 Correct 173 ms 31984 KB Output is correct
45 Correct 190 ms 31684 KB Output is correct
46 Correct 187 ms 30768 KB Output is correct
47 Correct 174 ms 31520 KB Output is correct
48 Correct 241 ms 35024 KB Output is correct
49 Correct 236 ms 33116 KB Output is correct
50 Correct 209 ms 35616 KB Output is correct
51 Correct 232 ms 35428 KB Output is correct
52 Correct 232 ms 34796 KB Output is correct
53 Correct 234 ms 34640 KB Output is correct
54 Correct 243 ms 36944 KB Output is correct