oj.uz

Submission #1033740

# Submission time Handle Problem Language Result Execution time Memory
1033740 2024-07-25T04:48:01 Z hotboy2703 Fountain Parks (IOI21_parks) C++17
30 / 100
 486 ms 31808 KB 
#include "parks.h"

#include<bits/stdc++.h>
using ll = int;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define MASK(i) (1LL<<(i))
#define BIT(mask,i) (((mask) >> (i))&1)
struct point{
    ll x,y,id;
    point(ll x1 = 0,ll y1 = 0,ll id1 = 0):x(x1),y(y1),id(id1){}
    bool operator < (const point &p)const {
        return MP(x,y) < MP(p.x,p.y);
    }
};
namespace sub1{
    ll solve(vector <ll> x,vector <ll> y){
        for (auto z:x)if (z > 6 || z < 2)return -1;
        ll n = sz(x);
        vector <pll> all[7];
        vector <point> a(n);
        
        for (ll i = 0;i < n;i ++){
            a[i] = {x[i],y[i],i};
        }
        sort(a.begin(),a.end());
        for (ll i = 0;i < n;i ++){
            if (all[a[i].x].empty() || all[a[i].x].back().se + 2 != a[i].y)all[a[i].x].push_back(MP(a[i].y,a[i].y));
            else{
                all[a[i].x].back().se+=2;
            }
        }
        vector <int> U, V, A, B;
        auto add = [&](pll u,pll v, ll x,ll y){
            // cout<<u.fi<<' '<<u.se<<' '<<v.fi<<' '<<v.se<<endl;
            U.push_back((*lower_bound(a.begin(),a.end(),point(u.fi,u.se,0))).id);
            V.push_back((*lower_bound(a.begin(),a.end(),point(v.fi,v.se,0))).id);
            A.push_back(x);
            B.push_back(y);
        };
        for (auto x:all[2]){
            for (ll i = x.fi + 2;i <= x.se;i += 2){
                add(MP(2,i-2),MP(2,i),1,i-1);
            }
        }
        for (auto x:all[4]){
            static ll ptr2 = 0;
            static ll ptr6 = 0;
            vector <ll> sus2,sus6;
            while (ptr2 < sz(all[2]) && all[2][ptr2].se < x.fi)ptr2++;
            while (ptr2 < sz(all[2]) && all[2][ptr2].fi <= x.se){
                // cout<<all[2][ptr2].fi<<' '<<all[2][ptr2].se<<endl;
                pll tmp = all[2][ptr2];
                if (tmp.fi <= x.fi && x.fi <= tmp.se){
                    add(MP(4,x.fi),MP(2,x.fi),3,x.fi-1);
                }
                else if (tmp.fi <= x.se && x.se <= tmp.se){
                    add(MP(4,x.se),MP(2,x.se),3,x.se+1);
                }
                else{
                    sus2.push_back(tmp.fi);
                }
                ptr2++;
            }

            while (ptr6 < sz(all[6]) && all[6][ptr6].se < x.fi)ptr6++;
            while (ptr6 < sz(all[6]) && all[6][ptr6].fi <= x.se){
                pll tmp = all[6][ptr6];
                if (tmp.fi <= x.fi && x.fi <= tmp.se){
                    add(MP(4,x.fi),MP(6,x.fi),5,x.fi-1);
                }
                else if (tmp.fi <= x.se && x.se <= tmp.se){
                    add(MP(4,x.se),MP(6,x.se),5,x.se+1);
                }
                else{
                    sus6.push_back(tmp.fi);
                }
                ptr6++;
            }
            ptr2=0,ptr6=0;
            for (ll j = x.fi + 2;j <= x.se;j += 2){
                while(ptr2 < sz(sus2) && sus2[ptr2]<j)ptr2++; 
                while(ptr6 < sz(sus6) && sus6[ptr6]<j)ptr6++; 
                bool do2,do6;
                do2 =  (ptr2 < sz(sus2) && sus2[ptr2]==j);
                do6 =  (ptr6 < sz(sus6) && sus6[ptr6]==j);
                if (do2 && do6){
                    add(MP(4,j),MP(2,j),3,j-1);
                    add(MP(4,j),MP(6,j),5,j+1);
                    add(MP(4,j),MP(4,j-2),5,j-1);
                    add(MP(4,j),MP(4,j+2),3,j+1);
                    j+=2;
                }
                else if (do2){
                    add(MP(4,j),MP(2,j),3,j-1);
                    add(MP(4,j),MP(4,j-2),5,j-1);
                }
                else if (do6){
                    add(MP(4,j),MP(6,j),5,j-1);
                    add(MP(4,j),MP(4,j-2),3,j-1);
                }
                else add(MP(4,j),MP(4,j-2),3,j-1);
            }
        } 
        for (auto x:all[6]){
            for (ll i = x.fi + 2;i <= x.se;i += 2){
                add(MP(6,i-2),MP(6,i),7,i-1);
            }
        }
        {
            vector <vector <ll > > g(n);
            for (ll i = 0;i < sz(U);i ++){
                g[U[i]].push_back(V[i]);
                g[V[i]].push_back(U[i]);
            }
            vector <bool> in(n);
            queue <ll> q;
            q.push(0);
            in[0] = 1;
            while (!q.empty()){
                ll u = q.front();
                q.pop();
                for (auto v:g[u]){
                    if (!in[v]){
                        in[v] = 1;
                        q.push(v);
                    }
                }
            }
            for (ll i = 0;i < n;i ++)if (!in[i])return 0;
            build(U, V, A, B);
            return 1;
        }
    }
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
    ll tmp = sub1::solve(x,y);
    if (tmp != -1)return tmp;
    ll n = sz(x);
    vector <point> a(n);
    
    for (ll i = 0;i < n;i ++){
        a[i] = {x[i],y[i],i};
    }
    sort(a.begin(),a.end());
    vector <int> U, V, A, B;
    auto add = [&](pll u,pll v, ll x,ll y){
        // cout<<u.fi<<' '<<u.se<<' '<<v.fi<<' '<<v.se<<endl;
        U.push_back((*lower_bound(a.begin(),a.end(),point(u.fi,u.se,0))).id);
        V.push_back((*lower_bound(a.begin(),a.end(),point(v.fi,v.se,0))).id);
        A.push_back(x);
        B.push_back(y);
    };
    vector <pll> last;
    // for (ll i = 0;i < n;i ++)cout<<a[i].x<<' '<<a[i].y<<'\n';
    for (ll i = 0;i < n;i ++){
        // cout<<a[i].x<<' '<<a[i-1].x<<' '<<i<<endl;
        if (i && a[i].x != a[i-1].x+2)return 0;
        ll j = i;
        while (j < n && a[j].x==a[i].x)j++;
        j--;
        vector <pll> all;
        for (ll k = i;k <= j;k ++){
            if (all.empty() || all.back().se + 2 != a[k].y)all.push_back(MP(a[k].y,a[k].y));
            else{
                all.back().se+=2;
            }
        }
        ll ptr = 0;
        for (auto x:all){
            while (ptr < sz(last) && last[ptr].se < x.fi)ptr++;
            while (ptr < sz(last) && last[ptr].fi <= x.se){
                pll tmp = last[ptr];
                if (tmp.fi <= x.fi && x.fi <= tmp.se){
                    add(MP(a[i].x,x.fi),MP(a[i].x-2,x.fi),a[i].x-1,x.fi-1);
                }
                else if (tmp.fi <= x.se && x.se <= tmp.se){
                    add(MP(a[i].x,x.se),MP(a[i].x-2,x.se),a[i].x-1,x.se+1);
                }
                ptr++;
            }
            for (ll k = x.fi + 2;k <= x.se;k += 2){
                add(MP(a[i].x,k),MP(a[i].x,k-2),a[i].x-1,k-1);
            }
        }
        last = all;
        i=j;
    }
    {
        vector <vector <ll > > g(n);
        for (ll i = 0;i < sz(U);i ++){
            g[U[i]].push_back(V[i]);
            g[V[i]].push_back(U[i]);
        }
        vector <bool> in(n);
        queue <ll> q;
        q.push(0);
        in[0] = 1;
        while (!q.empty()){
            ll u = q.front();
            q.pop();
            for (auto v:g[u]){
                if (!in[v]){
                    in[v] = 1;
                    q.push(v);
                }
            }
        }
        for (ll i = 0;i < n;i ++)if (!in[i])return 0;
        build(U, V, A, B);
        return 1;
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 124 ms 29340 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 736 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 58 ms 11932 KB Output is correct
29 Correct 72 ms 17848 KB Output is correct
30 Correct 96 ms 23736 KB Output is correct
31 Correct 121 ms 29324 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 187 ms 15128 KB Output is correct
46 Correct 263 ms 21684 KB Output is correct
47 Correct 256 ms 21668 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 124 ms 29340 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 736 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 58 ms 11932 KB Output is correct
29 Correct 72 ms 17848 KB Output is correct
30 Correct 96 ms 23736 KB Output is correct
31 Correct 121 ms 29324 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 187 ms 15128 KB Output is correct
46 Correct 263 ms 21684 KB Output is correct
47 Correct 256 ms 21668 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 440 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 436 KB Output is correct
53 Correct 0 ms 344 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 132 ms 29444 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 3 ms 1228 KB Output is correct
59 Correct 4 ms 1620 KB Output is correct
60 Correct 60 ms 14752 KB Output is correct
61 Correct 74 ms 19884 KB Output is correct
62 Correct 104 ms 24492 KB Output is correct
63 Correct 120 ms 29352 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 0 ms 344 KB Output is correct
67 Correct 126 ms 29444 KB Output is correct
68 Correct 121 ms 29356 KB Output is correct
69 Correct 122 ms 29356 KB Output is correct
70 Correct 2 ms 860 KB Output is correct
71 Correct 4 ms 1372 KB Output is correct
72 Correct 168 ms 15004 KB Output is correct
73 Correct 295 ms 22560 KB Output is correct
74 Correct 486 ms 29936 KB Output is correct
75 Correct 121 ms 31808 KB Output is correct
76 Correct 110 ms 29456 KB Output is correct
77 Correct 2 ms 860 KB Output is correct
78 Correct 4 ms 1372 KB Output is correct
79 Correct 120 ms 15624 KB Output is correct
80 Correct 247 ms 23248 KB Output is correct
81 Correct 390 ms 30672 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 127 ms 28920 KB Output is correct
21 Incorrect 86 ms 22572 KB Solution announced impossible, but it is possible.
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct
17 Correct 123 ms 28260 KB Output is correct
18 Incorrect 90 ms 22328 KB Solution announced impossible, but it is possible.
19 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 440 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 63 ms 14884 KB Output is correct
10 Correct 5 ms 1880 KB Output is correct
11 Correct 31 ms 8124 KB Output is correct
12 Correct 7 ms 2392 KB Output is correct
13 Correct 14 ms 5328 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 73 ms 14920 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 124 ms 29340 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 736 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 58 ms 11932 KB Output is correct
29 Correct 72 ms 17848 KB Output is correct
30 Correct 96 ms 23736 KB Output is correct
31 Correct 121 ms 29324 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 187 ms 15128 KB Output is correct
46 Correct 263 ms 21684 KB Output is correct
47 Correct 256 ms 21668 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 440 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 436 KB Output is correct
53 Correct 0 ms 344 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 132 ms 29444 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 3 ms 1228 KB Output is correct
59 Correct 4 ms 1620 KB Output is correct
60 Correct 60 ms 14752 KB Output is correct
61 Correct 74 ms 19884 KB Output is correct
62 Correct 104 ms 24492 KB Output is correct
63 Correct 120 ms 29352 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 0 ms 344 KB Output is correct
67 Correct 126 ms 29444 KB Output is correct
68 Correct 121 ms 29356 KB Output is correct
69 Correct 122 ms 29356 KB Output is correct
70 Correct 2 ms 860 KB Output is correct
71 Correct 4 ms 1372 KB Output is correct
72 Correct 168 ms 15004 KB Output is correct
73 Correct 295 ms 22560 KB Output is correct
74 Correct 486 ms 29936 KB Output is correct
75 Correct 121 ms 31808 KB Output is correct
76 Correct 110 ms 29456 KB Output is correct
77 Correct 2 ms 860 KB Output is correct
78 Correct 4 ms 1372 KB Output is correct
79 Correct 120 ms 15624 KB Output is correct
80 Correct 247 ms 23248 KB Output is correct
81 Correct 390 ms 30672 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 127 ms 28920 KB Output is correct
86 Incorrect 86 ms 22572 KB Solution announced impossible, but it is possible.
87 Halted 0 ms 0 KB -