oj.uz

Submission #603089

# Submission time Handle Problem Language Result Execution time Memory
603089 2022-07-23T15:10:28 Z FatihSolak Fountain Parks (IOI21_parks) C++17
55 / 100
 1472 ms 123772 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:{0}){
                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}]});
                }
            }
        }
    }
    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(x[i] != 2 || x[i] != 6)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}]});
                }
            }
        }
    }
    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}]});
                }
            }
        }
    }
    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:75:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   75 |     if(u.size() != n-1)
      |        ~~~~~~~~~^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1283 ms 82080 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 5 ms 596 KB Output is correct
27 Correct 6 ms 596 KB Output is correct
28 Correct 364 ms 33072 KB Output is correct
29 Correct 605 ms 49360 KB Output is correct
30 Correct 909 ms 65672 KB Output is correct
31 Correct 1253 ms 82060 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 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 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 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 596 KB Output is correct
45 Correct 516 ms 45504 KB Output is correct
46 Correct 860 ms 65556 KB Output is correct
47 Correct 785 ms 65716 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1283 ms 82080 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 5 ms 596 KB Output is correct
27 Correct 6 ms 596 KB Output is correct
28 Correct 364 ms 33072 KB Output is correct
29 Correct 605 ms 49360 KB Output is correct
30 Correct 909 ms 65672 KB Output is correct
31 Correct 1253 ms 82060 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 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 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 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 596 KB Output is correct
45 Correct 516 ms 45504 KB Output is correct
46 Correct 860 ms 65556 KB Output is correct
47 Correct 785 ms 65716 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Runtime error 976 ms 123772 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 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1253 ms 82940 KB Output is correct
21 Correct 1162 ms 83032 KB Output is correct
22 Correct 1359 ms 82760 KB Output is correct
23 Correct 997 ms 88648 KB Output is correct
24 Correct 408 ms 16740 KB Output is correct
25 Correct 872 ms 21156 KB Output is correct
26 Correct 586 ms 21344 KB Output is correct
27 Correct 1062 ms 103808 KB Output is correct
28 Correct 1077 ms 103944 KB Output is correct
29 Correct 1472 ms 103844 KB Output is correct
30 Correct 1426 ms 103872 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 59 ms 6736 KB Output is correct
33 Correct 152 ms 8520 KB Output is correct
34 Correct 1094 ms 83020 KB Output is correct
35 Correct 19 ms 1364 KB Output is correct
36 Correct 124 ms 5432 KB Output is correct
37 Correct 340 ms 10544 KB Output is correct
38 Correct 421 ms 35328 KB Output is correct
39 Correct 650 ms 47944 KB Output is correct
40 Correct 881 ms 60992 KB Output is correct
41 Correct 1120 ms 74100 KB Output is correct
42 Correct 1421 ms 87212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 0 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 1 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 3 ms 468 KB Output is correct
55 Correct 4 ms 596 KB Output is correct
56 Correct 452 ms 45368 KB Output is correct
57 Correct 757 ms 65600 KB Output is correct
58 Correct 753 ms 65812 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 0 ms 212 KB Output is correct
62 Correct 1033 ms 104124 KB Output is correct
63 Correct 987 ms 104076 KB Output is correct
64 Correct 1031 ms 103476 KB Output is correct
65 Correct 6 ms 596 KB Output is correct
66 Correct 12 ms 1024 KB Output is correct
67 Correct 501 ms 44728 KB Output is correct
68 Correct 831 ms 67016 KB Output is correct
69 Correct 1210 ms 89364 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct
17 Correct 1141 ms 104412 KB Output is correct
18 Correct 1089 ms 104520 KB Output is correct
19 Correct 1298 ms 82756 KB Output is correct
20 Correct 1224 ms 87492 KB Output is correct
21 Correct 1018 ms 84584 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 133 ms 14348 KB Output is correct
24 Correct 49 ms 2292 KB Output is correct
25 Correct 181 ms 7716 KB Output is correct
26 Correct 427 ms 12356 KB Output is correct
27 Correct 511 ms 44672 KB Output is correct
28 Correct 805 ms 55768 KB Output is correct
29 Correct 897 ms 66980 KB Output is correct
30 Correct 1069 ms 77912 KB Output is correct
31 Correct 1361 ms 89148 KB Output is correct
32 Correct 1178 ms 90848 KB Output is correct
33 Correct 1035 ms 104032 KB Output is correct
34 Correct 7 ms 724 KB Output is correct
35 Correct 15 ms 1256 KB Output is correct
36 Correct 515 ms 44512 KB Output is correct
37 Correct 880 ms 66944 KB Output is correct
38 Correct 1179 ms 89056 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 436 ms 52132 KB Output is correct
10 Correct 30 ms 5612 KB Output is correct
11 Correct 238 ms 28156 KB Output is correct
12 Correct 46 ms 8140 KB Output is correct
13 Correct 56 ms 5036 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 500 ms 52168 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1283 ms 82080 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 5 ms 596 KB Output is correct
27 Correct 6 ms 596 KB Output is correct
28 Correct 364 ms 33072 KB Output is correct
29 Correct 605 ms 49360 KB Output is correct
30 Correct 909 ms 65672 KB Output is correct
31 Correct 1253 ms 82060 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 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 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 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 596 KB Output is correct
45 Correct 516 ms 45504 KB Output is correct
46 Correct 860 ms 65556 KB Output is correct
47 Correct 785 ms 65716 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Runtime error 976 ms 123772 KB Execution killed with signal 6
56 Halted 0 ms 0 KB -