oj.uz

Submission #603679

# Submission time Handle Problem Language Result Execution time Memory
603679 2022-07-24T09:36:33 Z Siffer Fountain Parks (IOI21_parks) C++17
45 / 100
 429 ms 54640 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;

typedef pair<int,int> ii;
typedef pair<ii,int> iii;

#define F first
#define S second

int xx[] = {0,0,1,-1};
int yy[] = {1,-1,0,0};

vector<vector<int>> g;
vector<bool> vis;
int c = 0;

void search(int i) {
    vis[i] = 1; c++;
    for(auto x: g[i]) if(!vis[x]) search(x);
}

int construct_roads(std::vector<int> x, std::vector<int> y) {
    int n = x.size();
    vis.resize(n,0);
    g.resize(n);
    vector<iii> p;
    for(int i = 0; i < n; i++) p.push_back({{x[i],y[i]},i});
    sort(p.begin(),p.end());
    vector<ii> roads;
    map<ii,int> rr;
    for(int i = 0; i < n-1; i++) {
        if(p[i].F.F == p[i+1].F.F && p[i+1].F.S-p[i].F.S == 2) {
            ii a = {p[i].F.F, p[i].F.S+1};
            rr[a] = roads.size();
            roads.emplace_back(p[i].S, p[i+1].S);
            g[p[i].S].push_back(p[i+1].S);
            g[p[i+1].S].push_back(p[i].S);
        }
    }
    for(int i = 0; i < n; i++) swap(p[i].F.F,p[i].F.S);
    sort(p.begin(),p.end());
    for(int i = 0; i < n; i++) swap(p[i].F.F,p[i].F.S);
    for(int i = 0; i < n-1; i++) {
        if(p[i].F.S == p[i+1].F.S && p[i+1].F.F-p[i].F.F == 2) {
            ii a = {p[i].F.F+1,p[i].F.S};
            rr[a] = roads.size();
            roads.emplace_back(p[i].S, p[i+1].S);
            g[p[i].S].push_back(p[i+1].S);
            g[p[i+1].S].push_back(p[i].S);
        }
    }
    int m = roads.size();
    search(0);
    if(c < n) return 0;
    vector<ii> b;
    vector<int> rb(m,-1);
    for(auto x: rr) {
        if(rb[x.S] == -1) {
            rb[x.S] = b.size();
            int f = x.S;
            ii a;
            if(x.F.F%2) a = {x.F.F, x.F.S+1};
            else a = {x.F.F+1, x.F.S};
            b.push_back(a);
            //cout << a.F << " " << a.S << endl;
            bool bb = true;
            while(bb) {
                bb = false;
                for(int i = 0; i < 4; i++) {
                    ii po = {a.F+xx[i], a.S+yy[i]};
                    if(rr.count(po) && rr[po] != f) {
                        f = rr[po];
                        if(rb[f] >= 0) break;
                        bb = true;
                        a = {po.F+xx[i], po.S+yy[i]};
                        //cout << a.F << " " << a.S << endl;
                        rb[f] = b.size();
                        b.push_back(a);
                        break;
                    }
                }
            }
        }
    }
    vector<int> u(m), v(m), ba(m), bb(m);
    for(int i = 0; i < m; i++) {
        u[i] = roads[i].F; v[i] = roads[i].S;
        ba[i] = b[rb[i]].F; bb[i] = b[rb[i]].S;
    }
    build(u, v, ba, bb);
    //for(auto x: rr) cout << x.F.F << " " << x.F.S << endl;
    return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct
17 Incorrect 0 ms 212 KB Tree @(3, 3) appears more than once: for edges on positions 0 and 2
18 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct
17 Incorrect 0 ms 212 KB Tree @(3, 3) appears more than once: for edges on positions 0 and 2
18 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 338 ms 51176 KB Output is correct
21 Correct 336 ms 49788 KB Output is correct
22 Correct 349 ms 49040 KB Output is correct
23 Correct 252 ms 41340 KB Output is correct
24 Correct 75 ms 12996 KB Output is correct
25 Correct 171 ms 32388 KB Output is correct
26 Correct 147 ms 32332 KB Output is correct
27 Correct 280 ms 44200 KB Output is correct
28 Correct 261 ms 44292 KB Output is correct
29 Correct 301 ms 44220 KB Output is correct
30 Correct 311 ms 44128 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 24 ms 3568 KB Output is correct
33 Correct 31 ms 7112 KB Output is correct
34 Correct 316 ms 50144 KB Output is correct
35 Correct 7 ms 1940 KB Output is correct
36 Correct 37 ms 8556 KB Output is correct
37 Correct 83 ms 16808 KB Output is correct
38 Correct 132 ms 18284 KB Output is correct
39 Correct 192 ms 24896 KB Output is correct
40 Correct 259 ms 32004 KB Output is correct
41 Correct 322 ms 38412 KB Output is correct
42 Correct 377 ms 45108 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 0 ms 300 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 2 ms 596 KB Output is correct
55 Correct 2 ms 724 KB Output is correct
56 Correct 139 ms 24144 KB Output is correct
57 Correct 215 ms 35068 KB Output is correct
58 Correct 211 ms 34892 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 300 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 337 ms 48632 KB Output is correct
63 Correct 336 ms 48816 KB Output is correct
64 Correct 327 ms 49220 KB Output is correct
65 Correct 3 ms 948 KB Output is correct
66 Correct 6 ms 1608 KB Output is correct
67 Correct 145 ms 23236 KB Output is correct
68 Correct 226 ms 35632 KB Output is correct
69 Correct 320 ms 46316 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct
17 Correct 329 ms 50876 KB Output is correct
18 Correct 298 ms 50368 KB Output is correct
19 Correct 351 ms 51168 KB Output is correct
20 Correct 399 ms 54640 KB Output is correct
21 Correct 306 ms 43580 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 55 ms 7800 KB Output is correct
24 Correct 20 ms 3988 KB Output is correct
25 Correct 63 ms 12864 KB Output is correct
26 Correct 110 ms 21816 KB Output is correct
27 Correct 200 ms 26452 KB Output is correct
28 Correct 257 ms 33300 KB Output is correct
29 Correct 327 ms 39684 KB Output is correct
30 Correct 373 ms 46200 KB Output is correct
31 Correct 429 ms 52784 KB Output is correct
32 Correct 395 ms 54348 KB Output is correct
33 Correct 340 ms 50652 KB Output is correct
34 Correct 4 ms 1108 KB Output is correct
35 Correct 6 ms 1812 KB Output is correct
36 Correct 155 ms 24812 KB Output is correct
37 Correct 244 ms 37416 KB Output is correct
38 Correct 340 ms 49716 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 151 ms 25104 KB Output is correct
10 Correct 11 ms 2764 KB Output is correct
11 Correct 71 ms 13748 KB Output is correct
12 Correct 18 ms 4024 KB Output is correct
13 Correct 23 ms 8260 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 152 ms 23784 KB Output is correct
17 Incorrect 0 ms 212 KB Tree @(3, 3) appears more than once: for edges on positions 0 and 2
18 Halted 0 ms 0 KB -