oj.uz

Submission #408501

# Submission time Handle Problem Language Result Execution time Memory
408501 2021-05-19T07:48:50 Z muhammad_hokimiyon Stations (IOI20_stations) C++14
100 / 100
 1697 ms 55772 KB 
#include "stations.h"
#include <vector>
#include<bits/stdc++.h>

#define fi first
#define se second

using namespace std;

const int N = 1e3 + 7;

vector<int> tin,tout,lv;

void dfs(vector<vector<int>> g, int x, int p, int &G)
{
    tin[x] = G++;
    for(auto y : g[x]){
        if(y == p)continue;
        lv[y] = 1 - lv[x];
        dfs(g, y, x, G);
    }
    tout[x] = G++;
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	vector<vector<int>> g(n + 7);
	tin.resize(n + 7);
	tout.resize(n + 7);
	lv.resize(n + 7);
	for(int i = 0; i < n - 1; i++){
        int x = u[i], y = v[i];
        g[x].push_back(y);
        g[y].push_back(x);
	}
	int st = 0;
	dfs(g, 0, 0, st);
	vector<int> op;
	for(int i = 0; i < n; i++){
        if(lv[i])labels[i] = tin[i];
        else labels[i] = tout[i];
        op.push_back(labels[i]);
	}
	sort(op.begin(), op.end());
	st = 0;
	vector<int> used(3 * n + 7, 0);
	for(auto x : op){
        used[x] = st++;
	}
	for(int i = 0; i < n; i++){
        labels[i] = used[labels[i]];
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
    if(s < c[0]){
        vector<pair<int, int>> nc;
        int ls = s;
        for(int i = 0; i + 1 < (int)c.size(); i++){
            nc.push_back({ls, c[i]});
            ls = c[i] + 1;
        }
        for(auto x : nc){
            if(x.fi <= t && t <= x.se){
                return x.se;
            }
        }
        return c.back();
    }else{
        assert(s > c.back());
        vector<pair<int, int>> nc;
        int ls = s - 1;
        for(int i = (int)c.size() - 1; i > 0; i--){
            nc.push_back({c[i], ls});
            ls = c[i] - 1;
        }
        for(auto x : nc){
            if(x.fi <= t && t <= x.se){
                return x.fi;
            }
        }
        return c[0];
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 961 ms 55568 KB Output is correct
2 Correct 1475 ms 55308 KB Output is correct
3 Correct 917 ms 400 KB Output is correct
4 Correct 845 ms 400 KB Output is correct
5 Correct 849 ms 484 KB Output is correct
6 Correct 1279 ms 49316 KB Output is correct
7 Correct 814 ms 41776 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 4 ms 524 KB Output is correct
10 Correct 2 ms 468 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1237 ms 1124 KB Output is correct
2 Correct 994 ms 1128 KB Output is correct
3 Correct 1448 ms 400 KB Output is correct
4 Correct 992 ms 480 KB Output is correct
5 Correct 707 ms 472 KB Output is correct
6 Correct 622 ms 1096 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1269 ms 55692 KB Output is correct
2 Correct 1535 ms 53236 KB Output is correct
3 Correct 1020 ms 420 KB Output is correct
4 Correct 1172 ms 472 KB Output is correct
5 Correct 723 ms 564 KB Output is correct
6 Correct 1224 ms 53624 KB Output is correct
7 Correct 876 ms 42632 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 6 ms 476 KB Output is correct
10 Correct 2 ms 472 KB Output is correct
11 Correct 698 ms 480 KB Output is correct
12 Correct 1441 ms 54580 KB Output is correct
13 Correct 1583 ms 50376 KB Output is correct
14 Correct 798 ms 3136 KB Output is correct
15 Correct 59 ms 400 KB Output is correct
16 Correct 260 ms 700 KB Output is correct
17 Correct 745 ms 832 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1341 ms 464 KB Output is correct
2 Correct 876 ms 476 KB Output is correct
3 Correct 963 ms 400 KB Output is correct
4 Correct 3 ms 404 KB Output is correct
5 Correct 5 ms 488 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 871 ms 484 KB Output is correct
8 Correct 1418 ms 460 KB Output is correct
9 Correct 828 ms 488 KB Output is correct
10 Correct 1045 ms 400 KB Output is correct
11 Correct 9 ms 524 KB Output is correct
12 Correct 7 ms 480 KB Output is correct
13 Correct 7 ms 468 KB Output is correct
14 Correct 5 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 551 ms 400 KB Output is correct
17 Correct 906 ms 400 KB Output is correct
18 Correct 604 ms 400 KB Output is correct
19 Correct 691 ms 528 KB Output is correct
20 Correct 649 ms 528 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1214 ms 55672 KB Output is correct
2 Correct 1293 ms 48944 KB Output is correct
3 Correct 1291 ms 468 KB Output is correct
4 Correct 784 ms 476 KB Output is correct
5 Correct 755 ms 484 KB Output is correct
6 Correct 1346 ms 55652 KB Output is correct
7 Correct 853 ms 31192 KB Output is correct
8 Correct 3 ms 476 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1130 ms 1180 KB Output is correct
12 Correct 896 ms 1072 KB Output is correct
13 Correct 1349 ms 472 KB Output is correct
14 Correct 985 ms 400 KB Output is correct
15 Correct 644 ms 468 KB Output is correct
16 Correct 591 ms 1040 KB Output is correct
17 Correct 749 ms 612 KB Output is correct
18 Correct 1443 ms 37492 KB Output is correct
19 Correct 1495 ms 51768 KB Output is correct
20 Correct 799 ms 4180 KB Output is correct
21 Correct 109 ms 472 KB Output is correct
22 Correct 252 ms 604 KB Output is correct
23 Correct 638 ms 864 KB Output is correct
24 Correct 6 ms 468 KB Output is correct
25 Correct 7 ms 468 KB Output is correct
26 Correct 6 ms 468 KB Output is correct
27 Correct 3 ms 468 KB Output is correct
28 Correct 2 ms 464 KB Output is correct
29 Correct 750 ms 400 KB Output is correct
30 Correct 933 ms 400 KB Output is correct
31 Correct 760 ms 508 KB Output is correct
32 Correct 1016 ms 400 KB Output is correct
33 Correct 683 ms 488 KB Output is correct
34 Correct 956 ms 42236 KB Output is correct
35 Correct 1697 ms 55772 KB Output is correct
36 Correct 1353 ms 46016 KB Output is correct
37 Correct 1452 ms 13576 KB Output is correct
38 Correct 1371 ms 13676 KB Output is correct
39 Correct 1409 ms 17900 KB Output is correct
40 Correct 1404 ms 17780 KB Output is correct
41 Correct 1304 ms 14680 KB Output is correct
42 Correct 381 ms 620 KB Output is correct
43 Correct 642 ms 772 KB Output is correct
44 Correct 718 ms 1168 KB Output is correct
45 Correct 865 ms 1688 KB Output is correct
46 Correct 810 ms 13896 KB Output is correct
47 Correct 1109 ms 26872 KB Output is correct
48 Correct 697 ms 1216 KB Output is correct
49 Correct 772 ms 1100 KB Output is correct