oj.uz

Submission #514702

# Submission time Handle Problem Language Result Execution time Memory
514702 2022-01-18T11:42:02 Z ymm Evacuation plan (IZhO18_plan) C++17
100 / 100
 559 ms 58364 KB 
///
///   What would happen if we used assembly language for CP?
///   Sorry, that was a strange thing to ask.
///

#include <bits/stdc++.h>
#define Loop(x,l,r) for(ll x = ll(l); x < ll(r); ++x)
#define LoopR(x,l,r) for(ll x = ll(r)-1; x >= ll(l); --x)
#define Kill(x) exit((cout << (x) << '\n', 0))
typedef long long ll;
typedef std::pair<int,int> pii;
typedef std::pair<ll,ll> pll;
using namespace std;

const int N = 200'010;
const int lg = 20;
vector<pii> A[N];
vector<int> B[N];
int dis[N];
pii srt[N];
int n, m, k;

int par[N];
int rt(int v){return par[v]==-1?v:(par[v]=rt(par[v]));}

namespace rmq{
	vector<int> vec;
	int ti[N];
	void dfs(int v){
		ti[v] = vec.size();
		vec.push_back(dis[v]);
		for(int u : B[v]){
			dfs(u);
			vec.push_back(dis[v]);
		}
	}
	int a[lg][N];
	int n;
	void make(){
		n = vec.size();
		Loop(i,0,n) a[0][i] = vec[i];
		Loop(k,0,lg-1)
			for(int i = 0; i+(2<<k) <= n; ++i)
				a[k+1][i] = min(a[k][i], a[k][i+(1<<k)]);
	}
	int get(int l, int r){
		int k = __lg(r-l);
		return min(a[k][l], a[k][r-(1<<k)]);
	}
}

int main()
{
	cin.tie(0) -> sync_with_stdio(false);
	Loop(i,0,N) dis[i] = 1e9;
	Loop(i,0,N) par[i] = -1;
	cin >> n >> m;
	Loop(i,0,m){
		int v, u, w;
		cin >> v >> u >> w;
		--v; --u;
		A[v].push_back({u,w});
		A[u].push_back({v,w});
	}
	cin >> k;
	set<pii> q;
	Loop(i,0,k) {
		int v; cin >> v; --v;
		dis[v] = 0;
		q.emplace(0, v);
	}
	while(q.size()){
		auto [d, v] = *q.begin(); q.erase(q.begin());
		for(auto [u, w] : A[v]){
			if(d+w < dis[u]){
				q.erase({dis[u],u});
				dis[u] = d+w;
				q.insert({dis[u],u});
			}
		}
	}
	Loop(i,0,n) srt[i] = {dis[i],i};
	sort(srt,srt+n,greater<pii>());
	Loop(i,0,n){
		int v = srt[i].second;
		for(auto [u, w] : A[v]){
			if(dis[u] > dis[v] || (dis[u]==dis[v] && u>v)){
				//cout<<v<<' '<<u<<"!"<<endl;
				u = rt(u);
				if(u!=v){
					par[u] = v;
					B[v].push_back(u);
				}
			}
		}
	}
	rmq::dfs(rt(0));
	rmq::make();
	int qq;
	cin >> qq;
	while(qq--){
		int v, u;
		cin >> v >> u;
		--v; --u;
		if(rmq::ti[v] > rmq::ti[u]) swap(v, u);
		cout << rmq::get(rmq::ti[v], rmq::ti[u]+1) << '\n';
	}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11212 KB Output is correct
2 Correct 6 ms 11460 KB Output is correct
3 Correct 6 ms 11428 KB Output is correct
4 Correct 5 ms 11288 KB Output is correct
5 Correct 9 ms 11468 KB Output is correct
6 Correct 6 ms 11552 KB Output is correct
7 Correct 5 ms 11340 KB Output is correct
8 Correct 6 ms 11340 KB Output is correct
9 Correct 6 ms 11468 KB Output is correct
10 Correct 7 ms 11468 KB Output is correct
11 Correct 7 ms 11512 KB Output is correct
12 Correct 6 ms 11468 KB Output is correct
13 Correct 6 ms 11428 KB Output is correct
14 Correct 6 ms 11424 KB Output is correct
15 Correct 6 ms 11468 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11212 KB Output is correct
2 Correct 6 ms 11460 KB Output is correct
3 Correct 6 ms 11428 KB Output is correct
4 Correct 5 ms 11288 KB Output is correct
5 Correct 9 ms 11468 KB Output is correct
6 Correct 6 ms 11552 KB Output is correct
7 Correct 5 ms 11340 KB Output is correct
8 Correct 6 ms 11340 KB Output is correct
9 Correct 6 ms 11468 KB Output is correct
10 Correct 7 ms 11468 KB Output is correct
11 Correct 7 ms 11512 KB Output is correct
12 Correct 6 ms 11468 KB Output is correct
13 Correct 6 ms 11428 KB Output is correct
14 Correct 6 ms 11424 KB Output is correct
15 Correct 6 ms 11468 KB Output is correct
16 Correct 143 ms 32620 KB Output is correct
17 Correct 491 ms 57460 KB Output is correct
18 Correct 33 ms 15816 KB Output is correct
19 Correct 137 ms 37440 KB Output is correct
20 Correct 499 ms 57428 KB Output is correct
21 Correct 242 ms 44152 KB Output is correct
22 Correct 106 ms 42768 KB Output is correct
23 Correct 534 ms 57432 KB Output is correct
24 Correct 554 ms 57412 KB Output is correct
25 Correct 489 ms 57324 KB Output is correct
26 Correct 133 ms 37244 KB Output is correct
27 Correct 124 ms 37344 KB Output is correct
28 Correct 127 ms 37252 KB Output is correct
29 Correct 125 ms 37360 KB Output is correct
30 Correct 136 ms 37356 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11212 KB Output is correct
2 Correct 5 ms 11284 KB Output is correct
3 Correct 5 ms 11212 KB Output is correct
4 Correct 5 ms 11280 KB Output is correct
5 Correct 7 ms 11200 KB Output is correct
6 Correct 6 ms 11212 KB Output is correct
7 Correct 6 ms 11212 KB Output is correct
8 Correct 6 ms 11284 KB Output is correct
9 Correct 6 ms 11212 KB Output is correct
10 Correct 6 ms 11248 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 258 ms 41580 KB Output is correct
2 Correct 557 ms 55740 KB Output is correct
3 Correct 464 ms 55740 KB Output is correct
4 Correct 88 ms 37436 KB Output is correct
5 Correct 528 ms 55708 KB Output is correct
6 Correct 494 ms 55912 KB Output is correct
7 Correct 526 ms 55716 KB Output is correct
8 Correct 467 ms 55744 KB Output is correct
9 Correct 491 ms 55716 KB Output is correct
10 Correct 472 ms 55860 KB Output is correct
11 Correct 514 ms 55712 KB Output is correct
12 Correct 523 ms 55744 KB Output is correct
13 Correct 510 ms 55684 KB Output is correct
14 Correct 494 ms 55788 KB Output is correct
15 Correct 501 ms 55848 KB Output is correct
16 Correct 506 ms 55732 KB Output is correct
17 Correct 459 ms 55704 KB Output is correct
18 Correct 486 ms 55784 KB Output is correct
19 Correct 87 ms 40628 KB Output is correct
20 Correct 531 ms 55712 KB Output is correct
21 Correct 444 ms 56800 KB Output is correct
22 Correct 100 ms 35760 KB Output is correct
23 Correct 93 ms 34796 KB Output is correct
24 Correct 111 ms 35712 KB Output is correct
25 Correct 109 ms 35692 KB Output is correct
26 Correct 126 ms 33844 KB Output is correct
27 Correct 85 ms 37476 KB Output is correct
28 Correct 96 ms 35804 KB Output is correct
29 Correct 86 ms 37468 KB Output is correct
30 Correct 99 ms 35756 KB Output is correct
31 Correct 80 ms 37432 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11212 KB Output is correct
2 Correct 6 ms 11460 KB Output is correct
3 Correct 6 ms 11428 KB Output is correct
4 Correct 5 ms 11288 KB Output is correct
5 Correct 9 ms 11468 KB Output is correct
6 Correct 6 ms 11552 KB Output is correct
7 Correct 5 ms 11340 KB Output is correct
8 Correct 6 ms 11340 KB Output is correct
9 Correct 6 ms 11468 KB Output is correct
10 Correct 7 ms 11468 KB Output is correct
11 Correct 7 ms 11512 KB Output is correct
12 Correct 6 ms 11468 KB Output is correct
13 Correct 6 ms 11428 KB Output is correct
14 Correct 6 ms 11424 KB Output is correct
15 Correct 6 ms 11468 KB Output is correct
16 Correct 143 ms 32620 KB Output is correct
17 Correct 491 ms 57460 KB Output is correct
18 Correct 33 ms 15816 KB Output is correct
19 Correct 137 ms 37440 KB Output is correct
20 Correct 499 ms 57428 KB Output is correct
21 Correct 242 ms 44152 KB Output is correct
22 Correct 106 ms 42768 KB Output is correct
23 Correct 534 ms 57432 KB Output is correct
24 Correct 554 ms 57412 KB Output is correct
25 Correct 489 ms 57324 KB Output is correct
26 Correct 133 ms 37244 KB Output is correct
27 Correct 124 ms 37344 KB Output is correct
28 Correct 127 ms 37252 KB Output is correct
29 Correct 125 ms 37360 KB Output is correct
30 Correct 136 ms 37356 KB Output is correct
31 Correct 6 ms 11212 KB Output is correct
32 Correct 5 ms 11284 KB Output is correct
33 Correct 5 ms 11212 KB Output is correct
34 Correct 5 ms 11280 KB Output is correct
35 Correct 7 ms 11200 KB Output is correct
36 Correct 6 ms 11212 KB Output is correct
37 Correct 6 ms 11212 KB Output is correct
38 Correct 6 ms 11284 KB Output is correct
39 Correct 6 ms 11212 KB Output is correct
40 Correct 6 ms 11248 KB Output is correct
41 Correct 258 ms 41580 KB Output is correct
42 Correct 557 ms 55740 KB Output is correct
43 Correct 464 ms 55740 KB Output is correct
44 Correct 88 ms 37436 KB Output is correct
45 Correct 528 ms 55708 KB Output is correct
46 Correct 494 ms 55912 KB Output is correct
47 Correct 526 ms 55716 KB Output is correct
48 Correct 467 ms 55744 KB Output is correct
49 Correct 491 ms 55716 KB Output is correct
50 Correct 472 ms 55860 KB Output is correct
51 Correct 514 ms 55712 KB Output is correct
52 Correct 523 ms 55744 KB Output is correct
53 Correct 510 ms 55684 KB Output is correct
54 Correct 494 ms 55788 KB Output is correct
55 Correct 501 ms 55848 KB Output is correct
56 Correct 506 ms 55732 KB Output is correct
57 Correct 459 ms 55704 KB Output is correct
58 Correct 486 ms 55784 KB Output is correct
59 Correct 87 ms 40628 KB Output is correct
60 Correct 531 ms 55712 KB Output is correct
61 Correct 444 ms 56800 KB Output is correct
62 Correct 100 ms 35760 KB Output is correct
63 Correct 93 ms 34796 KB Output is correct
64 Correct 111 ms 35712 KB Output is correct
65 Correct 109 ms 35692 KB Output is correct
66 Correct 126 ms 33844 KB Output is correct
67 Correct 85 ms 37476 KB Output is correct
68 Correct 96 ms 35804 KB Output is correct
69 Correct 86 ms 37468 KB Output is correct
70 Correct 99 ms 35756 KB Output is correct
71 Correct 80 ms 37432 KB Output is correct
72 Correct 269 ms 43256 KB Output is correct
73 Correct 550 ms 57528 KB Output is correct
74 Correct 514 ms 57476 KB Output is correct
75 Correct 518 ms 57352 KB Output is correct
76 Correct 559 ms 57356 KB Output is correct
77 Correct 488 ms 57328 KB Output is correct
78 Correct 503 ms 57432 KB Output is correct
79 Correct 501 ms 57440 KB Output is correct
80 Correct 555 ms 57380 KB Output is correct
81 Correct 543 ms 57448 KB Output is correct
82 Correct 528 ms 57332 KB Output is correct
83 Correct 527 ms 57376 KB Output is correct
84 Correct 514 ms 57512 KB Output is correct
85 Correct 520 ms 57480 KB Output is correct
86 Correct 479 ms 57428 KB Output is correct
87 Correct 482 ms 57356 KB Output is correct
88 Correct 557 ms 57440 KB Output is correct
89 Correct 136 ms 42668 KB Output is correct
90 Correct 492 ms 57332 KB Output is correct
91 Correct 440 ms 58364 KB Output is correct
92 Correct 137 ms 37424 KB Output is correct
93 Correct 125 ms 36784 KB Output is correct
94 Correct 141 ms 37216 KB Output is correct
95 Correct 130 ms 37364 KB Output is correct
96 Correct 132 ms 35352 KB Output is correct
97 Correct 132 ms 39272 KB Output is correct
98 Correct 126 ms 37248 KB Output is correct
99 Correct 105 ms 39228 KB Output is correct
100 Correct 146 ms 37332 KB Output is correct