oj.uz

Submission #896371

# Submission time Handle Problem Language Result Execution time Memory
896371 2024-01-01T10:34:18 Z abcvuitunggio Fountain Parks (IOI21_parks) C++17
55 / 100
 569 ms 54256 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
int n,order[200001],p[200001],cnt;
map <int, int> mp[300001];
vector <int> px,py;
int f(int i){
    return (p[i]==i?i:p[i]=f(p[i]));
}
bool unite(int i, int j){
    i=f(i);
    j=f(j);
    if (i==j)
        return false;
    p[j]=i;
    return true;
}
int construct_roads(vector <int> x, vector <int> y){
    vector <int32_t> u,v,a,b;
    n=x.size();
    for (int i=0;i<n;i++)
        mp[x[i]][y[i]]=i;
    iota(order,order+n,0);
    px=x,py=y;
    sort(order,order+n,[](int i, int j){return make_pair(px[i],py[i])<make_pair(px[j],py[j]);});
    for (int i=0;i<n;i++){
        if (mp[x[i]-2].count(y[i])){
            int X=x[i]-1,Y=(x[i]%4?(y[i]+3)/4*4-1:y[i]/4*4+1);
            if (!mp[X].count(Y)){
                u.push_back(i);
                v.push_back(mp[x[i]-2][y[i]]);
                a.push_back(X);
                b.push_back(Y);
                mp[X][Y]=1;
            }
        }
        if (mp[x[i]].count(y[i]-2)){
            int X=(y[i]%4?x[i]/4*4+1:(x[i]+3)/4*4-1),Y=y[i]-1;
            if (!mp[X].count(Y)){
                u.push_back(i);
                v.push_back(mp[x[i]][y[i]-2]);
                a.push_back(X);
                b.push_back(Y);
                mp[X][Y]=1;
            }
        }
    }
    iota(p,p+n,0);
    for (int i=0;i<u.size();i++)
        cnt+=unite(u[i],v[i]);
    if (cnt<n-1)
        return 0;
    build(u,v,a,b);
    return 1;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:49:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for (int i=0;i<u.size();i++)
      |                  ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct
17 Correct 3 ms 14936 KB Output is correct
18 Correct 3 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 3 ms 14940 KB Output is correct
23 Correct 569 ms 48888 KB Output is correct
24 Correct 3 ms 14936 KB Output is correct
25 Correct 4 ms 15196 KB Output is correct
26 Correct 6 ms 15196 KB Output is correct
27 Correct 7 ms 15452 KB Output is correct
28 Correct 141 ms 28280 KB Output is correct
29 Correct 265 ms 35200 KB Output is correct
30 Correct 334 ms 42064 KB Output is correct
31 Correct 434 ms 48864 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 3 ms 14940 KB Output is correct
34 Correct 3 ms 14936 KB Output is correct
35 Correct 3 ms 14936 KB Output is correct
36 Correct 3 ms 14940 KB Output is correct
37 Correct 3 ms 14936 KB Output is correct
38 Correct 3 ms 14940 KB Output is correct
39 Correct 3 ms 14940 KB Output is correct
40 Correct 3 ms 14940 KB Output is correct
41 Correct 3 ms 14940 KB Output is correct
42 Correct 3 ms 14940 KB Output is correct
43 Correct 4 ms 15196 KB Output is correct
44 Correct 5 ms 15196 KB Output is correct
45 Correct 165 ms 31684 KB Output is correct
46 Correct 287 ms 39404 KB Output is correct
47 Correct 263 ms 39336 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct
17 Correct 3 ms 14936 KB Output is correct
18 Correct 3 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 3 ms 14940 KB Output is correct
23 Correct 569 ms 48888 KB Output is correct
24 Correct 3 ms 14936 KB Output is correct
25 Correct 4 ms 15196 KB Output is correct
26 Correct 6 ms 15196 KB Output is correct
27 Correct 7 ms 15452 KB Output is correct
28 Correct 141 ms 28280 KB Output is correct
29 Correct 265 ms 35200 KB Output is correct
30 Correct 334 ms 42064 KB Output is correct
31 Correct 434 ms 48864 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 3 ms 14940 KB Output is correct
34 Correct 3 ms 14936 KB Output is correct
35 Correct 3 ms 14936 KB Output is correct
36 Correct 3 ms 14940 KB Output is correct
37 Correct 3 ms 14936 KB Output is correct
38 Correct 3 ms 14940 KB Output is correct
39 Correct 3 ms 14940 KB Output is correct
40 Correct 3 ms 14940 KB Output is correct
41 Correct 3 ms 14940 KB Output is correct
42 Correct 3 ms 14940 KB Output is correct
43 Correct 4 ms 15196 KB Output is correct
44 Correct 5 ms 15196 KB Output is correct
45 Correct 165 ms 31684 KB Output is correct
46 Correct 287 ms 39404 KB Output is correct
47 Correct 263 ms 39336 KB Output is correct
48 Correct 3 ms 14936 KB Output is correct
49 Correct 3 ms 15192 KB Output is correct
50 Correct 3 ms 14940 KB Output is correct
51 Correct 4 ms 14940 KB Output is correct
52 Correct 3 ms 14940 KB Output is correct
53 Correct 3 ms 14940 KB Output is correct
54 Correct 3 ms 14940 KB Output is correct
55 Incorrect 439 ms 42636 KB Solution announced impossible, but it is possible.
56 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct
17 Correct 3 ms 14940 KB Output is correct
18 Correct 3 ms 14940 KB Output is correct
19 Correct 3 ms 14936 KB Output is correct
20 Correct 219 ms 48808 KB Output is correct
21 Correct 273 ms 48972 KB Output is correct
22 Correct 270 ms 48820 KB Output is correct
23 Correct 238 ms 43784 KB Output is correct
24 Correct 134 ms 30060 KB Output is correct
25 Correct 334 ms 42448 KB Output is correct
26 Correct 315 ms 42692 KB Output is correct
27 Correct 347 ms 48884 KB Output is correct
28 Correct 322 ms 49076 KB Output is correct
29 Correct 349 ms 48836 KB Output is correct
30 Correct 377 ms 48888 KB Output is correct
31 Correct 3 ms 14940 KB Output is correct
32 Correct 17 ms 17528 KB Output is correct
33 Correct 45 ms 22156 KB Output is correct
34 Correct 263 ms 48804 KB Output is correct
35 Correct 10 ms 16216 KB Output is correct
36 Correct 50 ms 21628 KB Output is correct
37 Correct 132 ms 28596 KB Output is correct
38 Correct 122 ms 28344 KB Output is correct
39 Correct 169 ms 33496 KB Output is correct
40 Correct 225 ms 38604 KB Output is correct
41 Correct 361 ms 43688 KB Output is correct
42 Correct 378 ms 48884 KB Output is correct
43 Correct 3 ms 14936 KB Output is correct
44 Correct 3 ms 14940 KB Output is correct
45 Correct 3 ms 14940 KB Output is correct
46 Correct 3 ms 14940 KB Output is correct
47 Correct 3 ms 14940 KB Output is correct
48 Correct 3 ms 14940 KB Output is correct
49 Correct 3 ms 14936 KB Output is correct
50 Correct 2 ms 14940 KB Output is correct
51 Correct 3 ms 14940 KB Output is correct
52 Correct 3 ms 14964 KB Output is correct
53 Correct 3 ms 14940 KB Output is correct
54 Correct 5 ms 15148 KB Output is correct
55 Correct 7 ms 15196 KB Output is correct
56 Correct 203 ms 31688 KB Output is correct
57 Correct 283 ms 39492 KB Output is correct
58 Correct 259 ms 39336 KB Output is correct
59 Correct 3 ms 14936 KB Output is correct
60 Correct 3 ms 14936 KB Output is correct
61 Correct 3 ms 14940 KB Output is correct
62 Correct 387 ms 48876 KB Output is correct
63 Correct 416 ms 48908 KB Output is correct
64 Correct 384 ms 48812 KB Output is correct
65 Correct 7 ms 15452 KB Output is correct
66 Correct 10 ms 15964 KB Output is correct
67 Correct 171 ms 31748 KB Output is correct
68 Correct 316 ms 40244 KB Output is correct
69 Correct 502 ms 48976 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct
17 Correct 315 ms 48936 KB Output is correct
18 Correct 300 ms 48804 KB Output is correct
19 Correct 237 ms 48876 KB Output is correct
20 Correct 443 ms 54256 KB Output is correct
21 Correct 340 ms 46448 KB Output is correct
22 Correct 3 ms 14936 KB Output is correct
23 Correct 45 ms 20428 KB Output is correct
24 Correct 24 ms 17996 KB Output is correct
25 Correct 76 ms 25356 KB Output is correct
26 Correct 143 ms 32688 KB Output is correct
27 Correct 174 ms 33720 KB Output is correct
28 Correct 205 ms 38312 KB Output is correct
29 Correct 298 ms 43144 KB Output is correct
30 Correct 353 ms 47788 KB Output is correct
31 Correct 425 ms 52472 KB Output is correct
32 Correct 474 ms 52644 KB Output is correct
33 Correct 402 ms 48804 KB Output is correct
34 Correct 7 ms 15708 KB Output is correct
35 Correct 15 ms 16216 KB Output is correct
36 Correct 170 ms 32748 KB Output is correct
37 Correct 305 ms 41892 KB Output is correct
38 Correct 458 ms 51240 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 3 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 172 ms 31856 KB Output is correct
10 Correct 11 ms 16732 KB Output is correct
11 Correct 56 ms 24004 KB Output is correct
12 Correct 18 ms 17912 KB Output is correct
13 Correct 31 ms 21036 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 15192 KB Output is correct
16 Correct 151 ms 31732 KB Output is correct
17 Correct 3 ms 14936 KB Output is correct
18 Correct 3 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 3 ms 14940 KB Output is correct
23 Correct 569 ms 48888 KB Output is correct
24 Correct 3 ms 14936 KB Output is correct
25 Correct 4 ms 15196 KB Output is correct
26 Correct 6 ms 15196 KB Output is correct
27 Correct 7 ms 15452 KB Output is correct
28 Correct 141 ms 28280 KB Output is correct
29 Correct 265 ms 35200 KB Output is correct
30 Correct 334 ms 42064 KB Output is correct
31 Correct 434 ms 48864 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 3 ms 14940 KB Output is correct
34 Correct 3 ms 14936 KB Output is correct
35 Correct 3 ms 14936 KB Output is correct
36 Correct 3 ms 14940 KB Output is correct
37 Correct 3 ms 14936 KB Output is correct
38 Correct 3 ms 14940 KB Output is correct
39 Correct 3 ms 14940 KB Output is correct
40 Correct 3 ms 14940 KB Output is correct
41 Correct 3 ms 14940 KB Output is correct
42 Correct 3 ms 14940 KB Output is correct
43 Correct 4 ms 15196 KB Output is correct
44 Correct 5 ms 15196 KB Output is correct
45 Correct 165 ms 31684 KB Output is correct
46 Correct 287 ms 39404 KB Output is correct
47 Correct 263 ms 39336 KB Output is correct
48 Correct 3 ms 14936 KB Output is correct
49 Correct 3 ms 15192 KB Output is correct
50 Correct 3 ms 14940 KB Output is correct
51 Correct 4 ms 14940 KB Output is correct
52 Correct 3 ms 14940 KB Output is correct
53 Correct 3 ms 14940 KB Output is correct
54 Correct 3 ms 14940 KB Output is correct
55 Incorrect 439 ms 42636 KB Solution announced impossible, but it is possible.
56 Halted 0 ms 0 KB -