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Submission #912669

# Submission time Handle Problem Language Result Execution time Memory
912669 2024-01-19T17:39:02 Z Wansur Split the Attractions (IOI19_split) C++14
100 / 100
 204 ms 43860 KB 
#include <bits/stdc++.h>
#define f first
#define s second
#define ent '\n'

using namespace std;
typedef long long ll;
const int mx=2e5+12;

pair<int,int> fup[mx];
vector<int> g[mx];
set<int> e[mx];
int Ans[mx];
int par[mx];
int tin[mx];
int ver[mx];
int sz[mx];
int pos[]={1,2,3};
int timer;

void calc(int v){
	sz[v]=1;
	for(int to:g[v]){
		if(sz[to]>0)continue;
		calc(to);
		par[to]=v;
		e[v].insert(to);
		e[to].insert(v);
		sz[v]+=sz[to];
	}
}

void dfs(int v,int p){
	tin[v]=fup[v].f=++timer;
	fup[v].s=v;
	ver[tin[v]]=v;
	for(int to:g[v]){
		if(to==p)continue;
		if(tin[to]>0){
			fup[v]=min(fup[v],{tin[to],v});
		}
		else{
			dfs(to,v);
			fup[v]=min(fup[v],fup[to]);
		}
	}
}

void get(int v,int p,int &cnt,int t){
	if(!cnt)return;
	Ans[v]=pos[t];
	cnt--;
	if(!cnt)return;
	for(int to:e[v]){
		if(to!=p)get(to,v,cnt,t);
	}
}

std::vector<int> find_split(int n, int a, int b, int c, std::vector<int> p, std::vector<int> q){
	for(int i=0;i<p.size();i++){
		g[p[i]].push_back(q[i]);
		g[q[i]].push_back(p[i]);
	}
	if(a>b){
		swap(a,b);
		swap(pos[0],pos[1]);
	}
	if(a>c){
		swap(a,c);
		swap(pos[0],pos[2]);
	}
	if(b>c){
		swap(b,c);
		swap(pos[1],pos[2]);
	}
	int A=a,B=b,C=c;
	calc(0);
	dfs(0,0);
	int v=-1;
	for(int i=0;i<n;i++){
	}
	for(int i=1;i<n;i++){
		if(sz[i]<a)continue;
		bool ok=1;
		for(int to:e[i]){
			if(sz[to]>=a && tin[to]>tin[i])ok=0;
		}
		if(ok){
			v=i;
			break;
		}
	}
	vector<int> ans(n);
	if(v<0)return ans;
	bool bad=0;
	vector<int> edg;
	for(int to:e[v]){
		if(tin[to]>tin[v])edg.push_back(to);
	}
	for(int to:edg){
		if(sz[v]-sz[to]<a){
			break;
		}
		if(fup[to].f<tin[v]){
			sz[v]-=sz[to];
			e[v].erase(to);
			e[to].erase(v);
			e[ver[fup[to].f]].insert(fup[to].s);
			e[fup[to].s].insert(ver[fup[to].f]);
		}
	}
	e[par[v]].erase(v);
	e[v].erase(par[v]);
	if(sz[v]>=a && n-sz[v]>=b){
		get(v,0,a,0);
		get(0,0,b,1);
		for(int i=0;i<n;i++){
			ans[i]=Ans[i];
			if(!ans[i])ans[i]=pos[2];
		}
	}
	else if(sz[v]>=b && n-sz[v]>=a){
		get(v,0,b,1);
		get(0,0,a,0);
		for(int i=0;i<n;i++){
			ans[i]=Ans[i];
			if(!ans[i])ans[i]=pos[2];
		}
	}
	return ans;
}

Compilation message

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:60:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |  for(int i=0;i<p.size();i++){
      |              ~^~~~~~~~~
split.cpp:76:6: warning: unused variable 'A' [-Wunused-variable]
   76 |  int A=a,B=b,C=c;
      |      ^
split.cpp:76:10: warning: unused variable 'B' [-Wunused-variable]
   76 |  int A=a,B=b,C=c;
      |          ^
split.cpp:76:14: warning: unused variable 'C' [-Wunused-variable]
   76 |  int A=a,B=b,C=c;
      |              ^
split.cpp:95:7: warning: unused variable 'bad' [-Wunused-variable]
   95 |  bool bad=0;
      |       ^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 18776 KB ok, correct split
2 Correct 4 ms 18776 KB ok, correct split
3 Correct 5 ms 18780 KB ok, correct split
4 Correct 4 ms 18780 KB ok, correct split
5 Correct 5 ms 18868 KB ok, correct split
6 Correct 5 ms 18780 KB ok, correct split
7 Correct 125 ms 43076 KB ok, correct split
8 Correct 99 ms 39860 KB ok, correct split
9 Correct 108 ms 38892 KB ok, correct split
10 Correct 105 ms 43504 KB ok, correct split
11 Correct 109 ms 43776 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 18780 KB ok, correct split
2 Correct 4 ms 18780 KB ok, correct split
3 Correct 5 ms 18776 KB ok, correct split
4 Correct 101 ms 38612 KB ok, correct split
5 Correct 83 ms 32728 KB ok, correct split
6 Correct 96 ms 43600 KB ok, correct split
7 Correct 120 ms 39504 KB ok, correct split
8 Correct 111 ms 34908 KB ok, correct split
9 Correct 82 ms 32596 KB ok, correct split
10 Correct 109 ms 33040 KB ok, correct split
11 Correct 105 ms 32968 KB ok, correct split
12 Correct 114 ms 32856 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 18780 KB ok, correct split
2 Correct 98 ms 32520 KB ok, correct split
3 Correct 31 ms 24924 KB ok, correct split
4 Correct 4 ms 18776 KB ok, correct split
5 Correct 120 ms 36404 KB ok, correct split
6 Correct 100 ms 35924 KB ok, correct split
7 Correct 95 ms 35668 KB ok, correct split
8 Correct 97 ms 37348 KB ok, correct split
9 Correct 111 ms 35412 KB ok, correct split
10 Correct 25 ms 23756 KB ok, no valid answer
11 Correct 42 ms 24668 KB ok, no valid answer
12 Correct 93 ms 33232 KB ok, no valid answer
13 Correct 103 ms 32820 KB ok, no valid answer
14 Correct 113 ms 33692 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 18780 KB ok, correct split
2 Correct 6 ms 18876 KB ok, no valid answer
3 Correct 4 ms 18776 KB ok, correct split
4 Correct 4 ms 18912 KB ok, correct split
5 Correct 4 ms 18780 KB ok, correct split
6 Correct 5 ms 18780 KB ok, correct split
7 Correct 5 ms 18780 KB ok, correct split
8 Correct 5 ms 18780 KB ok, correct split
9 Correct 7 ms 19292 KB ok, correct split
10 Correct 7 ms 19292 KB ok, correct split
11 Correct 4 ms 18780 KB ok, correct split
12 Correct 7 ms 19292 KB ok, correct split
13 Correct 4 ms 18780 KB ok, correct split
14 Correct 4 ms 18780 KB ok, correct split
15 Correct 5 ms 18780 KB ok, correct split
16 Correct 5 ms 18780 KB ok, correct split
17 Correct 4 ms 18780 KB ok, correct split
18 Correct 8 ms 18876 KB ok, correct split
19 Correct 5 ms 18780 KB ok, correct split
20 Correct 5 ms 19036 KB ok, correct split
21 Correct 6 ms 19292 KB ok, correct split
22 Correct 5 ms 19292 KB ok, correct split
23 Correct 6 ms 19292 KB ok, correct split
24 Correct 5 ms 19292 KB ok, correct split
25 Correct 6 ms 19288 KB ok, correct split
26 Correct 7 ms 19608 KB ok, correct split
27 Correct 7 ms 19292 KB ok, correct split
28 Correct 6 ms 19288 KB ok, correct split
29 Correct 5 ms 18780 KB ok, correct split
30 Correct 7 ms 19292 KB ok, correct split
31 Correct 5 ms 18892 KB ok, correct split
32 Correct 5 ms 18780 KB ok, correct split
33 Correct 5 ms 18780 KB ok, correct split
34 Correct 6 ms 19292 KB ok, correct split
35 Correct 6 ms 19292 KB ok, correct split
36 Correct 8 ms 19032 KB ok, correct split
37 Correct 6 ms 19292 KB ok, correct split
38 Correct 7 ms 19288 KB ok, correct split
39 Correct 7 ms 19288 KB ok, correct split
40 Correct 7 ms 19548 KB ok, correct split
41 Correct 6 ms 19132 KB ok, correct split
42 Correct 6 ms 19036 KB ok, correct split
43 Correct 7 ms 19288 KB ok, correct split
44 Correct 8 ms 19292 KB ok, correct split
45 Correct 7 ms 19292 KB ok, correct split
46 Correct 7 ms 19544 KB ok, correct split
47 Correct 6 ms 19292 KB ok, no valid answer
48 Correct 7 ms 19292 KB ok, correct split
49 Correct 6 ms 19292 KB ok, correct split
50 Correct 5 ms 18780 KB ok, no valid answer
51 Correct 4 ms 18780 KB ok, no valid answer
52 Correct 6 ms 19120 KB ok, no valid answer
53 Correct 7 ms 19292 KB ok, no valid answer
54 Correct 7 ms 19292 KB ok, no valid answer
55 Correct 8 ms 19124 KB ok, no valid answer
56 Correct 6 ms 19292 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 18776 KB ok, correct split
2 Correct 4 ms 18776 KB ok, correct split
3 Correct 5 ms 18780 KB ok, correct split
4 Correct 4 ms 18780 KB ok, correct split
5 Correct 5 ms 18868 KB ok, correct split
6 Correct 5 ms 18780 KB ok, correct split
7 Correct 125 ms 43076 KB ok, correct split
8 Correct 99 ms 39860 KB ok, correct split
9 Correct 108 ms 38892 KB ok, correct split
10 Correct 105 ms 43504 KB ok, correct split
11 Correct 109 ms 43776 KB ok, correct split
12 Correct 4 ms 18780 KB ok, correct split
13 Correct 4 ms 18780 KB ok, correct split
14 Correct 5 ms 18776 KB ok, correct split
15 Correct 101 ms 38612 KB ok, correct split
16 Correct 83 ms 32728 KB ok, correct split
17 Correct 96 ms 43600 KB ok, correct split
18 Correct 120 ms 39504 KB ok, correct split
19 Correct 111 ms 34908 KB ok, correct split
20 Correct 82 ms 32596 KB ok, correct split
21 Correct 109 ms 33040 KB ok, correct split
22 Correct 105 ms 32968 KB ok, correct split
23 Correct 114 ms 32856 KB ok, correct split
24 Correct 5 ms 18780 KB ok, correct split
25 Correct 98 ms 32520 KB ok, correct split
26 Correct 31 ms 24924 KB ok, correct split
27 Correct 4 ms 18776 KB ok, correct split
28 Correct 120 ms 36404 KB ok, correct split
29 Correct 100 ms 35924 KB ok, correct split
30 Correct 95 ms 35668 KB ok, correct split
31 Correct 97 ms 37348 KB ok, correct split
32 Correct 111 ms 35412 KB ok, correct split
33 Correct 25 ms 23756 KB ok, no valid answer
34 Correct 42 ms 24668 KB ok, no valid answer
35 Correct 93 ms 33232 KB ok, no valid answer
36 Correct 103 ms 32820 KB ok, no valid answer
37 Correct 113 ms 33692 KB ok, no valid answer
38 Correct 5 ms 18780 KB ok, correct split
39 Correct 6 ms 18876 KB ok, no valid answer
40 Correct 4 ms 18776 KB ok, correct split
41 Correct 4 ms 18912 KB ok, correct split
42 Correct 4 ms 18780 KB ok, correct split
43 Correct 5 ms 18780 KB ok, correct split
44 Correct 5 ms 18780 KB ok, correct split
45 Correct 5 ms 18780 KB ok, correct split
46 Correct 7 ms 19292 KB ok, correct split
47 Correct 7 ms 19292 KB ok, correct split
48 Correct 4 ms 18780 KB ok, correct split
49 Correct 7 ms 19292 KB ok, correct split
50 Correct 4 ms 18780 KB ok, correct split
51 Correct 4 ms 18780 KB ok, correct split
52 Correct 5 ms 18780 KB ok, correct split
53 Correct 5 ms 18780 KB ok, correct split
54 Correct 4 ms 18780 KB ok, correct split
55 Correct 8 ms 18876 KB ok, correct split
56 Correct 5 ms 18780 KB ok, correct split
57 Correct 5 ms 19036 KB ok, correct split
58 Correct 6 ms 19292 KB ok, correct split
59 Correct 5 ms 19292 KB ok, correct split
60 Correct 6 ms 19292 KB ok, correct split
61 Correct 5 ms 19292 KB ok, correct split
62 Correct 6 ms 19288 KB ok, correct split
63 Correct 7 ms 19608 KB ok, correct split
64 Correct 7 ms 19292 KB ok, correct split
65 Correct 6 ms 19288 KB ok, correct split
66 Correct 5 ms 18780 KB ok, correct split
67 Correct 7 ms 19292 KB ok, correct split
68 Correct 5 ms 18892 KB ok, correct split
69 Correct 5 ms 18780 KB ok, correct split
70 Correct 5 ms 18780 KB ok, correct split
71 Correct 6 ms 19292 KB ok, correct split
72 Correct 6 ms 19292 KB ok, correct split
73 Correct 8 ms 19032 KB ok, correct split
74 Correct 6 ms 19292 KB ok, correct split
75 Correct 7 ms 19288 KB ok, correct split
76 Correct 7 ms 19288 KB ok, correct split
77 Correct 7 ms 19548 KB ok, correct split
78 Correct 6 ms 19132 KB ok, correct split
79 Correct 6 ms 19036 KB ok, correct split
80 Correct 7 ms 19288 KB ok, correct split
81 Correct 8 ms 19292 KB ok, correct split
82 Correct 7 ms 19292 KB ok, correct split
83 Correct 7 ms 19544 KB ok, correct split
84 Correct 6 ms 19292 KB ok, no valid answer
85 Correct 7 ms 19292 KB ok, correct split
86 Correct 6 ms 19292 KB ok, correct split
87 Correct 5 ms 18780 KB ok, no valid answer
88 Correct 4 ms 18780 KB ok, no valid answer
89 Correct 6 ms 19120 KB ok, no valid answer
90 Correct 7 ms 19292 KB ok, no valid answer
91 Correct 7 ms 19292 KB ok, no valid answer
92 Correct 8 ms 19124 KB ok, no valid answer
93 Correct 6 ms 19292 KB ok, no valid answer
94 Correct 104 ms 37528 KB ok, correct split
95 Correct 136 ms 43860 KB ok, correct split
96 Correct 124 ms 41992 KB ok, correct split
97 Correct 33 ms 25292 KB ok, correct split
98 Correct 32 ms 25528 KB ok, correct split
99 Correct 44 ms 27476 KB ok, correct split
100 Correct 133 ms 37972 KB ok, correct split
101 Correct 102 ms 36620 KB ok, correct split
102 Correct 106 ms 36020 KB ok, correct split
103 Correct 111 ms 35788 KB ok, correct split
104 Correct 138 ms 37340 KB ok, correct split
105 Correct 53 ms 27220 KB ok, correct split
106 Correct 204 ms 37808 KB ok, correct split
107 Correct 87 ms 33956 KB ok, correct split
108 Correct 87 ms 33880 KB ok, correct split
109 Correct 115 ms 37204 KB ok, correct split
110 Correct 106 ms 36716 KB ok, correct split
111 Correct 109 ms 37068 KB ok, correct split
112 Correct 125 ms 37200 KB ok, correct split
113 Correct 109 ms 37320 KB ok, correct split
114 Correct 15 ms 21084 KB ok, correct split
115 Correct 16 ms 20828 KB ok, correct split
116 Correct 117 ms 36940 KB ok, correct split
117 Correct 103 ms 36812 KB ok, correct split
118 Correct 117 ms 34004 KB ok, correct split
119 Correct 93 ms 33876 KB ok, correct split
120 Correct 101 ms 39596 KB ok, correct split
121 Correct 84 ms 33688 KB ok, no valid answer
122 Correct 76 ms 34132 KB ok, no valid answer
123 Correct 117 ms 38212 KB ok, no valid answer
124 Correct 200 ms 37880 KB ok, no valid answer
125 Correct 114 ms 35788 KB ok, no valid answer
126 Correct 122 ms 33152 KB ok, no valid answer
127 Correct 114 ms 36304 KB ok, no valid answer