oj.uz

Submission #576604

# Submission time Handle Problem Language Result Execution time Memory
576604 2022-06-13T08:32:40 Z pooyashams Swapping Cities (APIO20_swap) C++14
100 / 100
 217 ms 28712 KB 
#include "swap.h"
#include <iostream>
#include <algorithm>
#include <numeric>
#include <vector>
#include <cassert>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int maxn = 2e5+10;
const int lgmx = 18;
const int inf = 1e9+69;

struct edge
{
	int x, y, z;
	inline bool operator<(const edge& o) const
	{
		return z < o.z;
	}
} edgs[maxn];

int N, M;

vector<int> comp[maxn];
int root[maxn];
bool ispath[maxn];
int fnp[maxn];
pii sars[maxn];

int epar[maxn];
int dpar[maxn];
vector<int> kids[maxn];

inline void invldp(int r, int z)
{
	if(!ispath[r]) return;
	for(int u: comp[r])
	{
		//if(!ispath[u])
		//	cerr << "fuck" << endl;
		ispath[u] = false;
		fnp[u] = z;
	}
}

inline bool isin(int x, pii p)
{
	return x == p.first or x == p.second;
}

inline void mrg(int x, int y, int z)
{
	if(comp[root[x]].size() < comp[root[y]].size())
		swap(x, y);
	int rx = root[x];
	int ry = root[y];
	if(rx == ry)
	{
		invldp(rx, z);
	}
	else
	{
		if( ispath[rx] and ispath[ry] and isin(x, sars[rx]) and isin(y, sars[ry]) )
		{
			int a = sars[rx].first^sars[rx].second ^ x;
			int b = sars[ry].first^sars[ry].second ^ y;
			sars[rx] = pii(a, b);
		}
		else
		{
			invldp(rx, z);
			invldp(ry, z);
		}
		epar[ry] = z;
		dpar[ry] = rx;
		for(int u: comp[ry])
		{
			root[u] = rx;
			comp[rx].push_back(u);
		}
		comp[ry].clear();
	}
}

int tin[maxn];
int tout[maxn];
int timer = 0;

void dfs(int v)
{
	tin[v] = timer++;
	for(int u: kids[v])
		dfs(u);
	tout[v] = timer;
}

inline bool isanc(int x, int y)
{
	return (tin[x] <= tin[y] and tout[y] <= tout[x]);
}

void init(int N, int M, vector<int> U, vector<int> V, vector<int> W)
{
	::N = N;
	::M = M;
	for(int i = 0; i < N; i++)
	{
		root[i] = i;
		comp[i].push_back(i);
		ispath[i] = true;
		fnp[i] = inf;
		sars[i] = pii(i, i);
		dpar[i] = i;
	}
	for(int i = 0; i < M; i++)
		edgs[i] = {V[i], U[i], W[i]};
	sort(edgs, edgs+M);
	for(int i = 0; i < M; i++)
	{
		int x = edgs[i].x;
		int y = edgs[i].y;
		int z = edgs[i].z;
		mrg(x, y, z);
	}
	int r = 0;
	for(int i = 0; i < N; i++)
	{
		if(dpar[i] != i)
			kids[dpar[i]].push_back(i);
		else
			r = i;
	}
	//cerr << r << endl;
	dfs(r);
}

int getMinimumFuelCapacity(int x, int y)
{
	int ans = max(fnp[x], fnp[y]);
	int v = x;
	int t = 0;
	while(!isanc(v, y))
	{
		ans = max(ans, epar[v]);
		v = dpar[v];
		t++;
	}
	assert(t <= lgmx);
	t = 0;
	v = y;
	while(!isanc(v, x))
	{
		ans = max(ans, epar[v]);
		v = dpar[v];
		t++;
	}
	//cerr << t << endl;
	assert(t <= lgmx);
	if(ans == inf)
		return -1;
	return ans;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 7 ms 9812 KB Output is correct
6 Correct 7 ms 9748 KB Output is correct
7 Correct 6 ms 9812 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 62 ms 20612 KB Output is correct
10 Correct 78 ms 22936 KB Output is correct
11 Correct 81 ms 22600 KB Output is correct
12 Correct 82 ms 23500 KB Output is correct
13 Correct 66 ms 20932 KB Output is correct
14 Correct 83 ms 20636 KB Output is correct
15 Correct 157 ms 24932 KB Output is correct
16 Correct 153 ms 24616 KB Output is correct
17 Correct 157 ms 25320 KB Output is correct
18 Correct 126 ms 22768 KB Output is correct
19 Correct 67 ms 15252 KB Output is correct
20 Correct 156 ms 26196 KB Output is correct
21 Correct 172 ms 25864 KB Output is correct
22 Correct 152 ms 26688 KB Output is correct
23 Correct 134 ms 24188 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 117 ms 22888 KB Output is correct
4 Correct 121 ms 23308 KB Output is correct
5 Correct 116 ms 23264 KB Output is correct
6 Correct 121 ms 23240 KB Output is correct
7 Correct 122 ms 23344 KB Output is correct
8 Correct 108 ms 22896 KB Output is correct
9 Correct 132 ms 23256 KB Output is correct
10 Correct 116 ms 22792 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 7 ms 9812 KB Output is correct
6 Correct 7 ms 9748 KB Output is correct
7 Correct 6 ms 9812 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9812 KB Output is correct
12 Correct 5 ms 9812 KB Output is correct
13 Correct 5 ms 9812 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9852 KB Output is correct
16 Correct 5 ms 9860 KB Output is correct
17 Correct 5 ms 9812 KB Output is correct
18 Correct 7 ms 9780 KB Output is correct
19 Correct 7 ms 9812 KB Output is correct
20 Correct 6 ms 9812 KB Output is correct
21 Correct 7 ms 9732 KB Output is correct
22 Correct 6 ms 9812 KB Output is correct
23 Correct 5 ms 9756 KB Output is correct
24 Correct 5 ms 9812 KB Output is correct
25 Correct 6 ms 9812 KB Output is correct
26 Correct 6 ms 9812 KB Output is correct
27 Correct 5 ms 9812 KB Output is correct
28 Correct 6 ms 9812 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 7 ms 9812 KB Output is correct
7 Correct 7 ms 9748 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 6 ms 9812 KB Output is correct
10 Correct 62 ms 20612 KB Output is correct
11 Correct 78 ms 22936 KB Output is correct
12 Correct 81 ms 22600 KB Output is correct
13 Correct 82 ms 23500 KB Output is correct
14 Correct 66 ms 20932 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 5 ms 9812 KB Output is correct
17 Correct 5 ms 9812 KB Output is correct
18 Correct 5 ms 9812 KB Output is correct
19 Correct 6 ms 9812 KB Output is correct
20 Correct 5 ms 9852 KB Output is correct
21 Correct 5 ms 9860 KB Output is correct
22 Correct 5 ms 9812 KB Output is correct
23 Correct 7 ms 9780 KB Output is correct
24 Correct 7 ms 9812 KB Output is correct
25 Correct 6 ms 9812 KB Output is correct
26 Correct 7 ms 9732 KB Output is correct
27 Correct 6 ms 9812 KB Output is correct
28 Correct 5 ms 9756 KB Output is correct
29 Correct 5 ms 9812 KB Output is correct
30 Correct 6 ms 9812 KB Output is correct
31 Correct 6 ms 9812 KB Output is correct
32 Correct 5 ms 9812 KB Output is correct
33 Correct 6 ms 9812 KB Output is correct
34 Correct 17 ms 11348 KB Output is correct
35 Correct 92 ms 23488 KB Output is correct
36 Correct 101 ms 23372 KB Output is correct
37 Correct 81 ms 23228 KB Output is correct
38 Correct 77 ms 22776 KB Output is correct
39 Correct 77 ms 22648 KB Output is correct
40 Correct 78 ms 21424 KB Output is correct
41 Correct 108 ms 23540 KB Output is correct
42 Correct 81 ms 23616 KB Output is correct
43 Correct 64 ms 21064 KB Output is correct
44 Correct 85 ms 22552 KB Output is correct
45 Correct 106 ms 21316 KB Output is correct
46 Correct 101 ms 23428 KB Output is correct
47 Correct 79 ms 22244 KB Output is correct
48 Correct 79 ms 21612 KB Output is correct
49 Correct 60 ms 15292 KB Output is correct
50 Correct 48 ms 14488 KB Output is correct
51 Correct 73 ms 19528 KB Output is correct
52 Correct 109 ms 25284 KB Output is correct
53 Correct 116 ms 24468 KB Output is correct
54 Correct 136 ms 27084 KB Output is correct
55 Correct 66 ms 21040 KB Output is correct
56 Correct 102 ms 23972 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 7 ms 9812 KB Output is correct
6 Correct 7 ms 9748 KB Output is correct
7 Correct 6 ms 9812 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 62 ms 20612 KB Output is correct
10 Correct 78 ms 22936 KB Output is correct
11 Correct 81 ms 22600 KB Output is correct
12 Correct 82 ms 23500 KB Output is correct
13 Correct 66 ms 20932 KB Output is correct
14 Correct 83 ms 20636 KB Output is correct
15 Correct 157 ms 24932 KB Output is correct
16 Correct 153 ms 24616 KB Output is correct
17 Correct 157 ms 25320 KB Output is correct
18 Correct 126 ms 22768 KB Output is correct
19 Correct 117 ms 22888 KB Output is correct
20 Correct 121 ms 23308 KB Output is correct
21 Correct 116 ms 23264 KB Output is correct
22 Correct 121 ms 23240 KB Output is correct
23 Correct 122 ms 23344 KB Output is correct
24 Correct 108 ms 22896 KB Output is correct
25 Correct 132 ms 23256 KB Output is correct
26 Correct 116 ms 22792 KB Output is correct
27 Correct 5 ms 9812 KB Output is correct
28 Correct 5 ms 9812 KB Output is correct
29 Correct 5 ms 9812 KB Output is correct
30 Correct 5 ms 9812 KB Output is correct
31 Correct 6 ms 9812 KB Output is correct
32 Correct 5 ms 9852 KB Output is correct
33 Correct 5 ms 9860 KB Output is correct
34 Correct 5 ms 9812 KB Output is correct
35 Correct 7 ms 9780 KB Output is correct
36 Correct 17 ms 11348 KB Output is correct
37 Correct 92 ms 23488 KB Output is correct
38 Correct 101 ms 23372 KB Output is correct
39 Correct 81 ms 23228 KB Output is correct
40 Correct 77 ms 22776 KB Output is correct
41 Correct 77 ms 22648 KB Output is correct
42 Correct 78 ms 21424 KB Output is correct
43 Correct 108 ms 23540 KB Output is correct
44 Correct 81 ms 23616 KB Output is correct
45 Correct 64 ms 21064 KB Output is correct
46 Correct 85 ms 22552 KB Output is correct
47 Correct 18 ms 11608 KB Output is correct
48 Correct 150 ms 26028 KB Output is correct
49 Correct 196 ms 25828 KB Output is correct
50 Correct 151 ms 25824 KB Output is correct
51 Correct 148 ms 25500 KB Output is correct
52 Correct 152 ms 24684 KB Output is correct
53 Correct 117 ms 21752 KB Output is correct
54 Correct 163 ms 26668 KB Output is correct
55 Correct 160 ms 26184 KB Output is correct
56 Correct 131 ms 23424 KB Output is correct
57 Correct 151 ms 25660 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 7 ms 9812 KB Output is correct
7 Correct 7 ms 9748 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 6 ms 9812 KB Output is correct
10 Correct 62 ms 20612 KB Output is correct
11 Correct 78 ms 22936 KB Output is correct
12 Correct 81 ms 22600 KB Output is correct
13 Correct 82 ms 23500 KB Output is correct
14 Correct 66 ms 20932 KB Output is correct
15 Correct 83 ms 20636 KB Output is correct
16 Correct 157 ms 24932 KB Output is correct
17 Correct 153 ms 24616 KB Output is correct
18 Correct 157 ms 25320 KB Output is correct
19 Correct 126 ms 22768 KB Output is correct
20 Correct 117 ms 22888 KB Output is correct
21 Correct 121 ms 23308 KB Output is correct
22 Correct 116 ms 23264 KB Output is correct
23 Correct 121 ms 23240 KB Output is correct
24 Correct 122 ms 23344 KB Output is correct
25 Correct 108 ms 22896 KB Output is correct
26 Correct 132 ms 23256 KB Output is correct
27 Correct 116 ms 22792 KB Output is correct
28 Correct 5 ms 9812 KB Output is correct
29 Correct 5 ms 9812 KB Output is correct
30 Correct 5 ms 9812 KB Output is correct
31 Correct 5 ms 9812 KB Output is correct
32 Correct 6 ms 9812 KB Output is correct
33 Correct 5 ms 9852 KB Output is correct
34 Correct 5 ms 9860 KB Output is correct
35 Correct 5 ms 9812 KB Output is correct
36 Correct 7 ms 9780 KB Output is correct
37 Correct 17 ms 11348 KB Output is correct
38 Correct 92 ms 23488 KB Output is correct
39 Correct 101 ms 23372 KB Output is correct
40 Correct 81 ms 23228 KB Output is correct
41 Correct 77 ms 22776 KB Output is correct
42 Correct 77 ms 22648 KB Output is correct
43 Correct 78 ms 21424 KB Output is correct
44 Correct 108 ms 23540 KB Output is correct
45 Correct 81 ms 23616 KB Output is correct
46 Correct 64 ms 21064 KB Output is correct
47 Correct 85 ms 22552 KB Output is correct
48 Correct 18 ms 11608 KB Output is correct
49 Correct 150 ms 26028 KB Output is correct
50 Correct 196 ms 25828 KB Output is correct
51 Correct 151 ms 25824 KB Output is correct
52 Correct 148 ms 25500 KB Output is correct
53 Correct 152 ms 24684 KB Output is correct
54 Correct 117 ms 21752 KB Output is correct
55 Correct 163 ms 26668 KB Output is correct
56 Correct 160 ms 26184 KB Output is correct
57 Correct 131 ms 23424 KB Output is correct
58 Correct 151 ms 25660 KB Output is correct
59 Correct 67 ms 15252 KB Output is correct
60 Correct 156 ms 26196 KB Output is correct
61 Correct 172 ms 25864 KB Output is correct
62 Correct 152 ms 26688 KB Output is correct
63 Correct 134 ms 24188 KB Output is correct
64 Correct 7 ms 9812 KB Output is correct
65 Correct 6 ms 9812 KB Output is correct
66 Correct 7 ms 9732 KB Output is correct
67 Correct 6 ms 9812 KB Output is correct
68 Correct 5 ms 9756 KB Output is correct
69 Correct 5 ms 9812 KB Output is correct
70 Correct 6 ms 9812 KB Output is correct
71 Correct 6 ms 9812 KB Output is correct
72 Correct 5 ms 9812 KB Output is correct
73 Correct 6 ms 9812 KB Output is correct
74 Correct 106 ms 21316 KB Output is correct
75 Correct 101 ms 23428 KB Output is correct
76 Correct 79 ms 22244 KB Output is correct
77 Correct 79 ms 21612 KB Output is correct
78 Correct 60 ms 15292 KB Output is correct
79 Correct 48 ms 14488 KB Output is correct
80 Correct 73 ms 19528 KB Output is correct
81 Correct 109 ms 25284 KB Output is correct
82 Correct 116 ms 24468 KB Output is correct
83 Correct 136 ms 27084 KB Output is correct
84 Correct 66 ms 21040 KB Output is correct
85 Correct 102 ms 23972 KB Output is correct
86 Correct 53 ms 14528 KB Output is correct
87 Correct 217 ms 25632 KB Output is correct
88 Correct 161 ms 25744 KB Output is correct
89 Correct 144 ms 23516 KB Output is correct
90 Correct 125 ms 17748 KB Output is correct
91 Correct 122 ms 18296 KB Output is correct
92 Correct 140 ms 22260 KB Output is correct
93 Correct 214 ms 27356 KB Output is correct
94 Correct 180 ms 26844 KB Output is correct
95 Correct 205 ms 28712 KB Output is correct
96 Correct 152 ms 23660 KB Output is correct
97 Correct 163 ms 25568 KB Output is correct