oj.uz

Submission #603078

# Submission time Handle Problem Language Result Execution time Memory
603078 2022-07-23T14:53:11 Z FatihSolak Fountain Parks (IOI21_parks) C++17
55 / 100
 1262 ms 137416 KB 
#include "parks.h"
#include <bits/stdc++.h>
#define N 200005
using namespace std;
int par[N];
int find(int a){
    if(a == par[a])return a;
    return par[a] = find(par[a]);
}
bool merge(int a,int b){
    a = find(a);
    b = find(b);
    if(a == b)
        return 0;
    par[a] = b;
    return 1;
}
int construct_roads(vector<int> x, vector<int> y) {
    if (x.size() == 1) {
	    build({}, {}, {}, {});
        return 1;
    }
    int n = x.size();
    map<pair<int,int>,int> mp;
    for(int i = 0;i<n;i++){
        par[i] = i;
        mp[{x[i],y[i]}] = i;
    }
    vector<int> u, v, a, b;
    vector<pair<int,int>> ord;
    for(int i = 0;i<n;i++){
        for(auto dx:{-2,0,2}){
            for(auto dy:{-2,0,2}){
                if(abs(dx) + abs(dy) != 2)continue;
                if(!mp.count({x[i]+dx,y[i]+dy}))continue;
                if(merge(i,mp[{x[i]+dx,y[i]+dy}])){
                    ord.push_back({i,mp[{x[i]+dx,y[i]+dy}]});
                    //u.push_back(i);
                    //v.push_back(mp[{x[i]+dx,y[i]+dy}]);
                }
            }
        }
    }
    sort(ord.begin(),ord.end(),[&](pair<int,int> c,pair<int,int> d){
        if(max(x[c.first],x[c.second]) != max(x[d.first],x[d.second])){
            return max(x[c.first],x[c.second]) < max(x[d.first],x[d.second]);
        }
        return max(y[c.first],y[c.second]) < max(y[d.first],y[d.second]);
    });
    for(auto c:ord){
        u.push_back(c.first);
        v.push_back(c.second);
    }
    if(u.size() != n-1)
        return 0;
    a.assign(n-1,-1);
    b.assign(n-1,-1);
    map<pair<int,int>,int> used;
    map<int,int> cnt;
    map<pair<int,int>,vector<int>> mpp;
    set<pair<int,int>> s;
    for(int i = 0;i<n-1;i++){
        for(auto dx:{-1,1}){
            for(auto dy:{-1,1}){   
                if(abs(x[u[i]]+dx - x[v[i]]) != 1 || abs(y[u[i]]+dy - y[v[i]]) != 1)continue;
                cnt[i]++;
                mpp[{x[u[i]]+dx,y[u[i]]+dy}].push_back(i);
            }
        }
        s.insert({cnt[i],i});
    }
    while(s.size()){
        auto tp = *s.begin();
        if(tp.first == 0){
            assert(0);
        }
        s.erase(tp);
        int i = tp.second;
        bool ok = 0;
        for(auto dx:{-1,1}){
            for(auto dy:{-1,1}){
                if(ok)continue;
                if(used.count({x[u[i]]+dx,y[u[i]]+dy}))continue;     
                if(abs(x[u[i]]+dx - x[v[i]]) != 1 || abs(y[u[i]]+dy - y[v[i]]) != 1)continue;
                used[{x[u[i]]+dx,y[u[i]]+dy}] = 1;
                a[i] = x[u[i]] + dx;
                b[i] = y[u[i]] + dy;
                for(auto z:mpp[{x[u[i]]+dx,y[u[i]]+dy}]){
                    if(a[z] != -1)continue;
                    s.erase({cnt[z],z});
                    cnt[z]--;
                    s.insert({cnt[z],z});
                }
                ok = 1;
            }
        }
    }
    build(u, v, a, b);
    return 1;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:54:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |     if(u.size() != n-1)
      |        ~~~~~~~~~^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 312 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 1261 ms 87896 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 4 ms 724 KB Output is correct
26 Correct 4 ms 580 KB Output is correct
27 Correct 5 ms 724 KB Output is correct
28 Correct 364 ms 35288 KB Output is correct
29 Correct 584 ms 52892 KB Output is correct
30 Correct 870 ms 70428 KB Output is correct
31 Correct 1103 ms 87848 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 3 ms 468 KB Output is correct
44 Correct 4 ms 612 KB Output is correct
45 Correct 455 ms 46384 KB Output is correct
46 Correct 720 ms 66928 KB Output is correct
47 Correct 714 ms 66812 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 312 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 1261 ms 87896 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 4 ms 724 KB Output is correct
26 Correct 4 ms 580 KB Output is correct
27 Correct 5 ms 724 KB Output is correct
28 Correct 364 ms 35288 KB Output is correct
29 Correct 584 ms 52892 KB Output is correct
30 Correct 870 ms 70428 KB Output is correct
31 Correct 1103 ms 87848 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 3 ms 468 KB Output is correct
44 Correct 4 ms 612 KB Output is correct
45 Correct 455 ms 46384 KB Output is correct
46 Correct 720 ms 66928 KB Output is correct
47 Correct 714 ms 66812 KB Output is correct
48 Correct 0 ms 312 KB Output is correct
49 Correct 1 ms 312 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 1 ms 212 KB Output is correct
55 Runtime error 822 ms 137416 KB Execution killed with signal 6
56 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct
17 Correct 1 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 1076 ms 83840 KB Output is correct
21 Correct 1020 ms 83724 KB Output is correct
22 Correct 1143 ms 84900 KB Output is correct
23 Correct 871 ms 90500 KB Output is correct
24 Correct 381 ms 18452 KB Output is correct
25 Correct 661 ms 22744 KB Output is correct
26 Correct 536 ms 22768 KB Output is correct
27 Correct 1041 ms 105488 KB Output is correct
28 Correct 999 ms 105532 KB Output is correct
29 Correct 1176 ms 105348 KB Output is correct
30 Correct 1133 ms 105468 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 56 ms 6948 KB Output is correct
33 Correct 121 ms 9788 KB Output is correct
34 Correct 937 ms 85132 KB Output is correct
35 Correct 19 ms 1484 KB Output is correct
36 Correct 93 ms 6128 KB Output is correct
37 Correct 219 ms 11744 KB Output is correct
38 Correct 369 ms 36424 KB Output is correct
39 Correct 559 ms 49352 KB Output is correct
40 Correct 734 ms 62792 KB Output is correct
41 Correct 917 ms 76404 KB Output is correct
42 Correct 1146 ms 89460 KB Output is correct
43 Correct 1 ms 308 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 308 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 312 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 2 ms 468 KB Output is correct
55 Correct 4 ms 644 KB Output is correct
56 Correct 449 ms 46232 KB Output is correct
57 Correct 735 ms 66764 KB Output is correct
58 Correct 708 ms 66756 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 312 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 1069 ms 105600 KB Output is correct
63 Correct 1116 ms 105560 KB Output is correct
64 Correct 1080 ms 105132 KB Output is correct
65 Correct 5 ms 724 KB Output is correct
66 Correct 12 ms 1152 KB Output is correct
67 Correct 511 ms 45496 KB Output is correct
68 Correct 880 ms 68196 KB Output is correct
69 Correct 1262 ms 90940 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct
17 Correct 1173 ms 105224 KB Output is correct
18 Correct 1098 ms 105376 KB Output is correct
19 Correct 1101 ms 83692 KB Output is correct
20 Correct 1089 ms 86412 KB Output is correct
21 Correct 906 ms 85696 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 145 ms 14616 KB Output is correct
24 Correct 41 ms 2592 KB Output is correct
25 Correct 149 ms 8636 KB Output is correct
26 Correct 297 ms 13936 KB Output is correct
27 Correct 457 ms 45420 KB Output is correct
28 Correct 616 ms 57016 KB Output is correct
29 Correct 777 ms 68392 KB Output is correct
30 Correct 987 ms 78988 KB Output is correct
31 Correct 1152 ms 90264 KB Output is correct
32 Correct 1087 ms 93492 KB Output is correct
33 Correct 1014 ms 105760 KB Output is correct
34 Correct 7 ms 852 KB Output is correct
35 Correct 15 ms 1364 KB Output is correct
36 Correct 480 ms 45612 KB Output is correct
37 Correct 793 ms 68736 KB Output is correct
38 Correct 1208 ms 91476 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 556 ms 52908 KB Output is correct
10 Correct 34 ms 5652 KB Output is correct
11 Correct 233 ms 28484 KB Output is correct
12 Correct 45 ms 8268 KB Output is correct
13 Correct 52 ms 5268 KB Output is correct
14 Correct 3 ms 320 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 502 ms 52880 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 312 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 1261 ms 87896 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 4 ms 724 KB Output is correct
26 Correct 4 ms 580 KB Output is correct
27 Correct 5 ms 724 KB Output is correct
28 Correct 364 ms 35288 KB Output is correct
29 Correct 584 ms 52892 KB Output is correct
30 Correct 870 ms 70428 KB Output is correct
31 Correct 1103 ms 87848 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 3 ms 468 KB Output is correct
44 Correct 4 ms 612 KB Output is correct
45 Correct 455 ms 46384 KB Output is correct
46 Correct 720 ms 66928 KB Output is correct
47 Correct 714 ms 66812 KB Output is correct
48 Correct 0 ms 312 KB Output is correct
49 Correct 1 ms 312 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 1 ms 212 KB Output is correct
55 Runtime error 822 ms 137416 KB Execution killed with signal 6
56 Halted 0 ms 0 KB -