oj.uz

Submission #824748

# Submission time Handle Problem Language Result Execution time Memory
824748 2023-08-14T09:27:59 Z andrei_boaca Fountain Parks (IOI21_parks) C++17
30 / 100
 389 ms 62256 KB 
#include "parks.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;

typedef pair<int,int> pii;
map<pii,int> ind;
map<pii,int> ocup;
map<pii,int> match;
struct point
{
    int x,y;
} v[200005];
int k;
vector<int> myy[200005];
vector<int> muchii[200005];
bool have[11][200005];
bool use[200005];
void dfs(int nod)
{
    use[nod]=1;
    for(int i:muchii[nod])
        if(!use[i])
            dfs(i);
}
int c[11][200005];
vector<int> U,V,A,B;
void addedge(int xa,int ya,int xb,int yb,int xc,int yc)
{
    int a=ind[{xa,ya}];
    int b=ind[{xb,yb}];
    U.push_back(a);
    V.push_back(b);
    muchii[a].push_back(b);
    muchii[b].push_back(a);
    A.push_back(xc);
    B.push_back(yc);
}
int construct_roads(std::vector<int> X, std::vector<int> Y)
{
    k=X.size();
    int xmax=0;
    for(int i=0;i<k;i++)
    {
        v[i]={X[i],Y[i]};
        ind[{X[i],Y[i]}]=i;
        xmax=max(xmax,X[i]);
        myy[X[i]].push_back(Y[i]);
        have[X[i]][Y[i]]=1;
    }
    if(xmax<=2)
    {
        sort(myy[2].begin(),myy[2].end());
        vector<int> U,V,a,b;
        for(int i=1;i<myy[2].size();i++)
        {
            if(myy[2][i]-myy[2][i-1]!=2)
                return 0;
            int x=2;
            int yu=myy[2][i-1];
            int yv=myy[2][i];
            U.push_back(ind[{x,yu}]);
            V.push_back(ind[{x,yv}]);
            a.push_back(x-1);
            b.push_back(yv-1);
        }
        build(U,V,a,b);
        return 1;
    }
    if(xmax<=4)
    {
        sort(myy[2].begin(),myy[2].end());
        sort(myy[4].begin(),myy[4].end());
        vector<int> U,V,A,B;
        for(int i=2;i<=200000;i+=2)
            if(have[2][i]&&have[2][i-2])
            {
                int a=ind[{2,i}];
                int b=ind[{2,i-2}];
                U.push_back(a);
                V.push_back(b);
                muchii[a].push_back(b);
                muchii[b].push_back(a);
                A.push_back(1);
                B.push_back(i-1);
            }
        for(int i=2;i<=200000;i+=2)
            if(have[4][i]&&have[4][i-2])
            {
                int a=ind[{4,i}];
                int b=ind[{4,i-2}];
                U.push_back(a);
                V.push_back(b);
                muchii[a].push_back(b);
                muchii[b].push_back(a);
                A.push_back(5);
                B.push_back(i-1);
            }
        for(int i=2;i<=200000;i+=2)
            if(have[2][i]&&have[4][i])
            {
                int a=ind[{2,i}];
                int b=ind[{4,i}];
                U.push_back(a);
                V.push_back(b);
                muchii[a].push_back(b);
                muchii[b].push_back(a);
                A.push_back(3);
                B.push_back(i+1);
            }
        dfs(0);
        for(int i=0;i<k;i++)
            if(!use[i])
                return 0;
        build(U,V,A,B);
        return 1;
    }
    if(xmax<=6)
    {
        sort(myy[2].begin(),myy[2].end());
        sort(myy[4].begin(),myy[4].end());
        sort(myy[6].begin(),myy[6].end());
        int nr=0;
        for(int i=2;i<=200000;i+=2)
            if(have[2][i])
            {
                if(have[2][i-2])
                {
                    addedge(2,i,2,i-2,1,i-1);
                    c[2][i]=c[2][i-2];
                }
                else
                {
                    nr++;
                    c[2][i]=nr;
                }
            }
        for(int i=2;i<=200000;i+=2)
            if(have[6][i])
            {
                if(have[6][i-2])
                {
                    addedge(6,i,6,i-2,7,i-1);
                    c[6][i]=c[6][i-2];
                }
                else
                {
                    nr++;
                    c[6][i]=nr;
                }
            }
        int lft=1;
        for(int i=2;i<=200000;i+=2)
            if(have[4][i])
            {
                if(have[4][i-2])
                {
                    if(lft==1)
                    {
                        addedge(4,i,4,i-2,3,i-1);
                        ocup[{3,i-1}]=1;
                    }
                    else
                    {
                        addedge(4,i,4,i-2,5,i-1);
                        ocup[{5,i-1}]=1;
                    }
                    lft^=1;
                    c[4][i]=c[4][i-2];
                }
                else
                {
                    lft=1;
                    nr++;
                    c[4][i]=nr;
                }
            }
        for(int i=2;i<=200000;i+=2)
            if(have[2][i]&&have[4][i])
            {
                int a=c[2][i];
                int b=c[4][i];
                if(match[{a,b}]==0)
                    {
                        match[{a,b}]=1;
                        if(!ocup[{3,i-1}])
                            {
                                addedge(2,i,4,i,3,i-1);
                                ocup[{3,i-1}]=1;
                            }
                        else
                        {
                            addedge(2,i,4,i,3,i+1);
                            ocup[{3,i+1}]=1;
                        }
                    }
            }
        for(int i=2;i<=200000;i+=2)
            if(have[4][i]&&have[6][i])
            {
                int a=c[4][i];
                int b=c[6][i];
                if(match[{a,b}]==0)
                    {
                        match[{a,b}]=1;
                        if(!ocup[{5,i-1}])
                            {
                                addedge(4,i,6,i,5,i-1);
                                ocup[{5,i-1}]=1;
                            }
                        else
                        {
                            addedge(4,i,6,i,5,i+1);
                            ocup[{5,i+1}]=1;
                        }
                    }
            }
        dfs(0);
        for(int i=0;i<k;i++)
            if(!use[i])
                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:55:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(int i=1;i<myy[2].size();i++)
      |                     ~^~~~~~~~~~~~~~
parks.cpp:225:1: warning: control reaches end of non-void function [-Wreturn-type]
  225 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 6 ms 9684 KB Output is correct
23 Correct 389 ms 52068 KB Output is correct
24 Correct 4 ms 9684 KB Output is correct
25 Correct 8 ms 9940 KB Output is correct
26 Correct 6 ms 10224 KB Output is correct
27 Correct 8 ms 10384 KB Output is correct
28 Correct 103 ms 26692 KB Output is correct
29 Correct 180 ms 35140 KB Output is correct
30 Correct 274 ms 43632 KB Output is correct
31 Correct 305 ms 52128 KB Output is correct
32 Correct 5 ms 9684 KB Output is correct
33 Correct 4 ms 9684 KB Output is correct
34 Correct 4 ms 9620 KB Output is correct
35 Correct 6 ms 9684 KB Output is correct
36 Correct 5 ms 9684 KB Output is correct
37 Correct 5 ms 9600 KB Output is correct
38 Correct 5 ms 9684 KB Output is correct
39 Correct 4 ms 9684 KB Output is correct
40 Correct 4 ms 9684 KB Output is correct
41 Correct 4 ms 9684 KB Output is correct
42 Correct 5 ms 9684 KB Output is correct
43 Correct 6 ms 9940 KB Output is correct
44 Correct 7 ms 10140 KB Output is correct
45 Correct 116 ms 27960 KB Output is correct
46 Correct 176 ms 36504 KB Output is correct
47 Correct 218 ms 36412 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 6 ms 9684 KB Output is correct
23 Correct 389 ms 52068 KB Output is correct
24 Correct 4 ms 9684 KB Output is correct
25 Correct 8 ms 9940 KB Output is correct
26 Correct 6 ms 10224 KB Output is correct
27 Correct 8 ms 10384 KB Output is correct
28 Correct 103 ms 26692 KB Output is correct
29 Correct 180 ms 35140 KB Output is correct
30 Correct 274 ms 43632 KB Output is correct
31 Correct 305 ms 52128 KB Output is correct
32 Correct 5 ms 9684 KB Output is correct
33 Correct 4 ms 9684 KB Output is correct
34 Correct 4 ms 9620 KB Output is correct
35 Correct 6 ms 9684 KB Output is correct
36 Correct 5 ms 9684 KB Output is correct
37 Correct 5 ms 9600 KB Output is correct
38 Correct 5 ms 9684 KB Output is correct
39 Correct 4 ms 9684 KB Output is correct
40 Correct 4 ms 9684 KB Output is correct
41 Correct 4 ms 9684 KB Output is correct
42 Correct 5 ms 9684 KB Output is correct
43 Correct 6 ms 9940 KB Output is correct
44 Correct 7 ms 10140 KB Output is correct
45 Correct 116 ms 27960 KB Output is correct
46 Correct 176 ms 36504 KB Output is correct
47 Correct 218 ms 36412 KB Output is correct
48 Correct 5 ms 9684 KB Output is correct
49 Correct 5 ms 9684 KB Output is correct
50 Correct 5 ms 9684 KB Output is correct
51 Correct 5 ms 9684 KB Output is correct
52 Correct 5 ms 9684 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 5 ms 9704 KB Output is correct
55 Correct 271 ms 53340 KB Output is correct
56 Correct 5 ms 9708 KB Output is correct
57 Correct 7 ms 10108 KB Output is correct
58 Correct 10 ms 11092 KB Output is correct
59 Correct 11 ms 11660 KB Output is correct
60 Correct 113 ms 31048 KB Output is correct
61 Correct 166 ms 40028 KB Output is correct
62 Correct 208 ms 45828 KB Output is correct
63 Correct 270 ms 53056 KB Output is correct
64 Correct 5 ms 9708 KB Output is correct
65 Correct 5 ms 9748 KB Output is correct
66 Correct 5 ms 9684 KB Output is correct
67 Correct 242 ms 49696 KB Output is correct
68 Correct 241 ms 49760 KB Output is correct
69 Correct 266 ms 49972 KB Output is correct
70 Correct 8 ms 10580 KB Output is correct
71 Correct 11 ms 11500 KB Output is correct
72 Correct 134 ms 34872 KB Output is correct
73 Correct 229 ms 48008 KB Output is correct
74 Correct 320 ms 60132 KB Output is correct
75 Correct 343 ms 62256 KB Output is correct
76 Correct 243 ms 50736 KB Output is correct
77 Correct 9 ms 10804 KB Output is correct
78 Correct 12 ms 11896 KB Output is correct
79 Correct 155 ms 35736 KB Output is correct
80 Correct 248 ms 49052 KB Output is correct
81 Correct 355 ms 62112 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct
17 Runtime error 12 ms 19452 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct
17 Runtime error 42 ms 25748 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9644 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 4 ms 9684 KB Output is correct
6 Correct 4 ms 9684 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 4 ms 9616 KB Output is correct
9 Correct 93 ms 23864 KB Output is correct
10 Correct 11 ms 11348 KB Output is correct
11 Correct 46 ms 17380 KB Output is correct
12 Correct 19 ms 12012 KB Output is correct
13 Correct 23 ms 14528 KB Output is correct
14 Correct 6 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 115 ms 23928 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 6 ms 9684 KB Output is correct
23 Correct 389 ms 52068 KB Output is correct
24 Correct 4 ms 9684 KB Output is correct
25 Correct 8 ms 9940 KB Output is correct
26 Correct 6 ms 10224 KB Output is correct
27 Correct 8 ms 10384 KB Output is correct
28 Correct 103 ms 26692 KB Output is correct
29 Correct 180 ms 35140 KB Output is correct
30 Correct 274 ms 43632 KB Output is correct
31 Correct 305 ms 52128 KB Output is correct
32 Correct 5 ms 9684 KB Output is correct
33 Correct 4 ms 9684 KB Output is correct
34 Correct 4 ms 9620 KB Output is correct
35 Correct 6 ms 9684 KB Output is correct
36 Correct 5 ms 9684 KB Output is correct
37 Correct 5 ms 9600 KB Output is correct
38 Correct 5 ms 9684 KB Output is correct
39 Correct 4 ms 9684 KB Output is correct
40 Correct 4 ms 9684 KB Output is correct
41 Correct 4 ms 9684 KB Output is correct
42 Correct 5 ms 9684 KB Output is correct
43 Correct 6 ms 9940 KB Output is correct
44 Correct 7 ms 10140 KB Output is correct
45 Correct 116 ms 27960 KB Output is correct
46 Correct 176 ms 36504 KB Output is correct
47 Correct 218 ms 36412 KB Output is correct
48 Correct 5 ms 9684 KB Output is correct
49 Correct 5 ms 9684 KB Output is correct
50 Correct 5 ms 9684 KB Output is correct
51 Correct 5 ms 9684 KB Output is correct
52 Correct 5 ms 9684 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 5 ms 9704 KB Output is correct
55 Correct 271 ms 53340 KB Output is correct
56 Correct 5 ms 9708 KB Output is correct
57 Correct 7 ms 10108 KB Output is correct
58 Correct 10 ms 11092 KB Output is correct
59 Correct 11 ms 11660 KB Output is correct
60 Correct 113 ms 31048 KB Output is correct
61 Correct 166 ms 40028 KB Output is correct
62 Correct 208 ms 45828 KB Output is correct
63 Correct 270 ms 53056 KB Output is correct
64 Correct 5 ms 9708 KB Output is correct
65 Correct 5 ms 9748 KB Output is correct
66 Correct 5 ms 9684 KB Output is correct
67 Correct 242 ms 49696 KB Output is correct
68 Correct 241 ms 49760 KB Output is correct
69 Correct 266 ms 49972 KB Output is correct
70 Correct 8 ms 10580 KB Output is correct
71 Correct 11 ms 11500 KB Output is correct
72 Correct 134 ms 34872 KB Output is correct
73 Correct 229 ms 48008 KB Output is correct
74 Correct 320 ms 60132 KB Output is correct
75 Correct 343 ms 62256 KB Output is correct
76 Correct 243 ms 50736 KB Output is correct
77 Correct 9 ms 10804 KB Output is correct
78 Correct 12 ms 11896 KB Output is correct
79 Correct 155 ms 35736 KB Output is correct
80 Correct 248 ms 49052 KB Output is correct
81 Correct 355 ms 62112 KB Output is correct
82 Runtime error 12 ms 19452 KB Execution killed with signal 11
83 Halted 0 ms 0 KB -