oj.uz

Submission #573741

# Submission time Handle Problem Language Result Execution time Memory
573741 2022-06-07T06:40:32 Z kshitij_sodani Stranded Far From Home (BOI22_island) C++14
100 / 100
 286 ms 44360 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define a first
#define b second
#define pb push_back
#define endl '\n'
 
 
llo it[200001];
llo n,m;
vector<llo> adj[200001];
vector<pair<llo,llo>> adj2[200001];
llo par[200001];
llo ss[200001];
llo find(llo no){
	if(par[no]==no){
		return no;
	}
	par[no]=find(par[no]);
	return par[no];
}
llo ans[200001];
void dfs(llo no,llo par=-1,llo ma=0){
	ans[no]=1-ma;
	for(auto j:adj2[no]){
		dfs(j.a,no,max(ma,j.b));
	}
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n>>m;
	vector<pair<llo,llo>> tt;
	for(llo i=0;i<n;i++){
		cin>>it[i];
		par[i]=i;
		ss[i]=it[i];
		tt.pb({it[i],i});
	}
	for(llo i=0;i<m;i++){
		llo aa,bb;
		cin>>aa>>bb;
		aa--;
		bb--;
		adj[aa].pb(bb);
		adj[bb].pb(aa);
	}
	sort(tt.begin(),tt.end());
	llo ind=0;
	/*for(auto j:tt){
		cout<<j.a<<",";
	}
	cout<<endl;*/
	while(ind<tt.size()){
		llo ind2=ind;
		while(ind<tt.size()){
			if(tt[ind].a==tt[ind2].a){
				ind++;
			}
			else{
				break;
			}
		}
		vector<llo> ee;
		for(llo i=ind2;i<ind;i++){
			ee.pb(tt[i].b);
		}
 
		for(auto j:ee){
			for(auto jj:adj[j]){
				if(it[jj]<it[j]){
					llo x=find(jj);
					if(it[x]==it[j]){
						llo y=find(j);
						if(x!=y){
							adj2[y].pb({x,0});
							par[x]=y;
							ss[y]+=ss[x];
						}
						continue;
					}
					llo z=0;
					if(ss[x]<it[j]){
						z=1;
						//cout<<j<<":"<<x<<endl;
					}
					llo y=find(j);
					if(x!=y){
						adj2[y].pb({x,z});
						par[x]=y;
						ss[y]+=ss[x];
					}
				}
			}
		}
		//cout<<ind2<<"::"<<ind<<endl;
		for(auto j:ee){
			for(auto jj:adj[j]){
				if(j==jj){
					continue;
				}
				if(it[jj]==it[j]){
					llo x=find(j);
					llo y=find(jj);
 
					if(x==y){
						continue;
					}
					//cout<<j<<"::"<<jj<<endl;
					par[x]=y;
					ss[y]+=ss[x];
					adj2[y].pb({x,0});
				}
			}
		}
		
 
 
	}
	dfs(find(0));
	for(llo i=0;i<n;i++){
		cout<<ans[i];
	}
	cout<<endl;
 
 
 
 
 
 
	return 0;
}

Compilation message

island.cpp: In function 'int main()':
island.cpp:55:11: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |  while(ind<tt.size()){
      |        ~~~^~~~~~~~~~
island.cpp:57:12: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |   while(ind<tt.size()){
      |         ~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9940 KB Output is correct
5 Correct 6 ms 9940 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 7 ms 9956 KB Output is correct
8 Correct 8 ms 9908 KB Output is correct
9 Correct 6 ms 10016 KB Output is correct
10 Correct 7 ms 9940 KB Output is correct
11 Correct 8 ms 9940 KB Output is correct
12 Correct 7 ms 9912 KB Output is correct
13 Correct 7 ms 9940 KB Output is correct
14 Correct 7 ms 9940 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 151 ms 35580 KB Output is correct
4 Correct 150 ms 41792 KB Output is correct
5 Correct 230 ms 31092 KB Output is correct
6 Correct 187 ms 31820 KB Output is correct
7 Correct 204 ms 31844 KB Output is correct
8 Correct 238 ms 43716 KB Output is correct
9 Correct 147 ms 32568 KB Output is correct
10 Correct 122 ms 31516 KB Output is correct
11 Correct 237 ms 44360 KB Output is correct
12 Correct 203 ms 33828 KB Output is correct
13 Correct 156 ms 42740 KB Output is correct
14 Correct 145 ms 40952 KB Output is correct
15 Correct 151 ms 41192 KB Output is correct
16 Correct 105 ms 40864 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 232 ms 30548 KB Output is correct
3 Correct 215 ms 30660 KB Output is correct
4 Correct 175 ms 42704 KB Output is correct
5 Correct 146 ms 39664 KB Output is correct
6 Correct 224 ms 30672 KB Output is correct
7 Correct 179 ms 41180 KB Output is correct
8 Correct 166 ms 41216 KB Output is correct
9 Correct 104 ms 40896 KB Output is correct
10 Correct 149 ms 35732 KB Output is correct
11 Correct 163 ms 31184 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 231 ms 32404 KB Output is correct
3 Correct 265 ms 32068 KB Output is correct
4 Correct 253 ms 31968 KB Output is correct
5 Correct 281 ms 33504 KB Output is correct
6 Correct 238 ms 33128 KB Output is correct
7 Correct 168 ms 38700 KB Output is correct
8 Correct 103 ms 43524 KB Output is correct
9 Correct 138 ms 23516 KB Output is correct
10 Correct 245 ms 33492 KB Output is correct
11 Correct 163 ms 31168 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9940 KB Output is correct
5 Correct 6 ms 9940 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 7 ms 9956 KB Output is correct
8 Correct 8 ms 9908 KB Output is correct
9 Correct 6 ms 10016 KB Output is correct
10 Correct 7 ms 9940 KB Output is correct
11 Correct 8 ms 9940 KB Output is correct
12 Correct 7 ms 9912 KB Output is correct
13 Correct 7 ms 9940 KB Output is correct
14 Correct 7 ms 9940 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 151 ms 35580 KB Output is correct
18 Correct 150 ms 41792 KB Output is correct
19 Correct 230 ms 31092 KB Output is correct
20 Correct 187 ms 31820 KB Output is correct
21 Correct 204 ms 31844 KB Output is correct
22 Correct 238 ms 43716 KB Output is correct
23 Correct 147 ms 32568 KB Output is correct
24 Correct 122 ms 31516 KB Output is correct
25 Correct 237 ms 44360 KB Output is correct
26 Correct 203 ms 33828 KB Output is correct
27 Correct 156 ms 42740 KB Output is correct
28 Correct 145 ms 40952 KB Output is correct
29 Correct 151 ms 41192 KB Output is correct
30 Correct 105 ms 40864 KB Output is correct
31 Correct 5 ms 9684 KB Output is correct
32 Correct 232 ms 30548 KB Output is correct
33 Correct 215 ms 30660 KB Output is correct
34 Correct 175 ms 42704 KB Output is correct
35 Correct 146 ms 39664 KB Output is correct
36 Correct 224 ms 30672 KB Output is correct
37 Correct 179 ms 41180 KB Output is correct
38 Correct 166 ms 41216 KB Output is correct
39 Correct 104 ms 40896 KB Output is correct
40 Correct 149 ms 35732 KB Output is correct
41 Correct 163 ms 31184 KB Output is correct
42 Correct 5 ms 9684 KB Output is correct
43 Correct 231 ms 32404 KB Output is correct
44 Correct 265 ms 32068 KB Output is correct
45 Correct 253 ms 31968 KB Output is correct
46 Correct 281 ms 33504 KB Output is correct
47 Correct 238 ms 33128 KB Output is correct
48 Correct 168 ms 38700 KB Output is correct
49 Correct 103 ms 43524 KB Output is correct
50 Correct 138 ms 23516 KB Output is correct
51 Correct 245 ms 33492 KB Output is correct
52 Correct 163 ms 31168 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 5 ms 9740 KB Output is correct
55 Correct 5 ms 9684 KB Output is correct
56 Correct 9 ms 9952 KB Output is correct
57 Correct 8 ms 9940 KB Output is correct
58 Correct 6 ms 9904 KB Output is correct
59 Correct 6 ms 9940 KB Output is correct
60 Correct 6 ms 9812 KB Output is correct
61 Correct 6 ms 10068 KB Output is correct
62 Correct 6 ms 9940 KB Output is correct
63 Correct 6 ms 9940 KB Output is correct
64 Correct 7 ms 9936 KB Output is correct
65 Correct 5 ms 10068 KB Output is correct
66 Correct 6 ms 9940 KB Output is correct
67 Correct 168 ms 35552 KB Output is correct
68 Correct 188 ms 41912 KB Output is correct
69 Correct 172 ms 31080 KB Output is correct
70 Correct 197 ms 31800 KB Output is correct
71 Correct 224 ms 31884 KB Output is correct
72 Correct 203 ms 43704 KB Output is correct
73 Correct 173 ms 32544 KB Output is correct
74 Correct 165 ms 31528 KB Output is correct
75 Correct 207 ms 44344 KB Output is correct
76 Correct 216 ms 33796 KB Output is correct
77 Correct 137 ms 42736 KB Output is correct
78 Correct 148 ms 40980 KB Output is correct
79 Correct 147 ms 41120 KB Output is correct
80 Correct 117 ms 40816 KB Output is correct
81 Correct 218 ms 30624 KB Output is correct
82 Correct 217 ms 30796 KB Output is correct
83 Correct 222 ms 42676 KB Output is correct
84 Correct 139 ms 39736 KB Output is correct
85 Correct 223 ms 30864 KB Output is correct
86 Correct 196 ms 41216 KB Output is correct
87 Correct 162 ms 41128 KB Output is correct
88 Correct 152 ms 35708 KB Output is correct
89 Correct 162 ms 31236 KB Output is correct
90 Correct 271 ms 32384 KB Output is correct
91 Correct 250 ms 32092 KB Output is correct
92 Correct 284 ms 31944 KB Output is correct
93 Correct 273 ms 33428 KB Output is correct
94 Correct 219 ms 33080 KB Output is correct
95 Correct 148 ms 38684 KB Output is correct
96 Correct 114 ms 43576 KB Output is correct
97 Correct 145 ms 23484 KB Output is correct
98 Correct 223 ms 33396 KB Output is correct
99 Correct 158 ms 31188 KB Output is correct
100 Correct 47 ms 14496 KB Output is correct
101 Correct 286 ms 31916 KB Output is correct
102 Correct 197 ms 30720 KB Output is correct
103 Correct 259 ms 31180 KB Output is correct
104 Correct 271 ms 32404 KB Output is correct