oj.uz

Submission #206138

# Submission time Handle Problem Language Result Execution time Memory
206138 2020-03-02T11:40:01 Z GioChkhaidze Construction of Highway (JOI18_construction) C++14
100 / 100
 1131 ms 30684 KB 
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
using namespace std;
const int N=1e5+5;
int n,a,b,c,L,R,l,r,co,timer,cnt;
int C[N],Root[N],tot[N],in[N],out[N],dep[N],P[N];
pair < ll , int > G[N];
vector < int > v[N];
vector < pair < int , ll > > s;
set < pair < pair < int , int > , int > > st;
set < pair < pair < int , int > , int > > :: iterator it;

void Compress() {
	vector < int > s;
	map < int , int > f;
	for (int i=1; i<=n; i++)
		s.push_back(C[i]);
	sort(s.begin(),s.end());
	s.erase(unique(s.begin(),s.end()),s.end());
	for (int i=0; i<s.size(); i++) 
		f[s[i]]=i+1;
	for (int i=1; i<=n; i++)
		C[i]=f[C[i]];
}

void Dfs(int x,int p) {
	tot[x]=1,dep[x]=dep[p]+1,P[x]=p;
	for (int i=0; i<v[x].size(); i++) 
		if (v[x][i]==p) {
			swap(v[x][i],v[x][v[x].size()-1]);
			v[x].pop_back();
			break;
		}
	for (int i=0; i<v[x].size(); i++) {
		Dfs(v[x][i],x);
		tot[x]+=tot[v[x][i]];
		if (tot[v[x][0]]<tot[v[x][i]])
			swap(v[x][0],v[x][i]);
	}
}

void Ufs(int x,int root) {
	in[x]=++timer,Root[x]=root;
	for (int i=0; i<v[x].size(); i++) 
		if (!i) Ufs(v[x][i],root);
			else Ufs(v[x][i],v[x][i]);
	out[x]=timer;
}

void Upd(int x,int dl) {
	while (x<=n) {
		if (G[x].S!=cnt)
			G[x].S=cnt,G[x].F=dl;
				else 
			G[x].F+=dl;
		x+=(x & -x);
	}
}

ll Get(int x) {
	ll res=0;
	while (x>0) {
		if (G[x].S==cnt) res+=G[x].F;
		x-=(x & -x);
	}
	return res;
}

ll Path(int x,int cost) {
	ll res=0;
	vector < pair < int , ll > > s;
	
	while (x) {
		L=in[Root[x]],R=in[x];
		while (st.size()) {
			it=st.lower_bound({{R+1,0},0});
			if (it==st.begin()) break;
			--it;
			l=(*it).F.F,r=(*it).F.S,co=(*it).S;
			if (l<L) break;
			
			if (R<r) {
				s.push_back({co,R-l+1});
				st.insert({{R+1,r},co});
				st.erase(st.find(*it));
			}		
				else {
				s.push_back({co,r-l+1});	
				st.erase(st.find(*it));
			}
		}
		st.insert({{L,R},cost});
		x=P[Root[x]];
	}
	
	++cnt;
	
	for (int i=0; i<s.size(); i++) {
		res+=1LL*s[i].S*Get(s[i].F-1);
		Upd(s[i].F,s[i].S);
	}

	return res;
}

main ( ){
	scanf("%d",&n);
	
	for (int i=1; i<=n; i++)
		scanf("%d",&C[i]);
		
	Compress();
		
	int a,b;
	for (int i=1; i<n; i++) {
		scanf("%d%d",&a,&b);
		s.push_back({a,b});
		v[a].push_back(b);
		v[b].push_back(a);
	}	
	
	Dfs(1,0);
	Ufs(1,1);
	
	for (int i=0; i<s.size(); i++) {
		a=s[i].F,b=s[i].S,c=C[b];
		printf("%I64d\n",Path(b,c));
	}
}

Compilation message

construction.cpp: In function 'void Compress()':
construction.cpp:22:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<s.size(); i++) 
                ~^~~~~~~~~
construction.cpp: In function 'void Dfs(int, int)':
construction.cpp:30:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) 
                ~^~~~~~~~~~~~
construction.cpp:36:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) {
                ~^~~~~~~~~~~~
construction.cpp: In function 'void Ufs(int, int)':
construction.cpp:46:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) 
                ~^~~~~~~~~~~~
construction.cpp: In function 'long long int Path(int, int)':
construction.cpp:100:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<s.size(); i++) {
                ~^~~~~~~~~
construction.cpp: At global scope:
construction.cpp:108:8: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main ( ){
        ^
construction.cpp: In function 'int main()':
construction.cpp:127:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<s.size(); i++) {
                ~^~~~~~~~~
construction.cpp:129:29: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   printf("%I64d\n",Path(b,c));
                    ~~~~~~~~~^
construction.cpp:109:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
construction.cpp:112:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&C[i]);
   ~~~~~^~~~~~~~~~~~
construction.cpp:118:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a,&b);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 7 ms 2680 KB Output is correct
4 Correct 7 ms 2808 KB Output is correct
5 Correct 8 ms 2808 KB Output is correct
6 Correct 7 ms 2808 KB Output is correct
7 Correct 7 ms 2808 KB Output is correct
8 Correct 7 ms 2680 KB Output is correct
9 Correct 7 ms 2808 KB Output is correct
10 Correct 7 ms 2808 KB Output is correct
11 Correct 7 ms 2808 KB Output is correct
12 Correct 7 ms 2808 KB Output is correct
13 Correct 8 ms 2808 KB Output is correct
14 Correct 9 ms 2936 KB Output is correct
15 Correct 8 ms 2936 KB Output is correct
16 Correct 10 ms 2808 KB Output is correct
17 Correct 8 ms 2808 KB Output is correct
18 Correct 8 ms 2808 KB Output is correct
19 Correct 7 ms 2808 KB Output is correct
20 Correct 8 ms 2808 KB Output is correct
21 Correct 7 ms 2808 KB Output is correct
22 Correct 8 ms 2808 KB Output is correct
23 Correct 8 ms 2808 KB Output is correct
24 Correct 7 ms 2808 KB Output is correct
25 Correct 8 ms 2808 KB Output is correct
26 Correct 7 ms 2808 KB Output is correct
27 Correct 7 ms 2808 KB Output is correct
28 Correct 7 ms 2808 KB Output is correct
29 Correct 7 ms 2808 KB Output is correct
30 Correct 9 ms 2808 KB Output is correct
31 Correct 8 ms 2808 KB Output is correct
32 Correct 7 ms 2808 KB Output is correct
33 Correct 7 ms 2812 KB Output is correct
34 Correct 7 ms 2808 KB Output is correct
35 Correct 7 ms 2808 KB Output is correct
36 Correct 7 ms 2808 KB Output is correct
37 Correct 7 ms 2808 KB Output is correct
38 Correct 7 ms 2808 KB Output is correct
39 Correct 7 ms 2808 KB Output is correct
40 Correct 7 ms 2808 KB Output is correct
41 Correct 7 ms 2808 KB Output is correct
42 Correct 7 ms 2808 KB Output is correct
43 Correct 8 ms 2812 KB Output is correct
44 Correct 9 ms 2808 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 7 ms 2680 KB Output is correct
4 Correct 7 ms 2808 KB Output is correct
5 Correct 8 ms 2808 KB Output is correct
6 Correct 7 ms 2808 KB Output is correct
7 Correct 7 ms 2808 KB Output is correct
8 Correct 7 ms 2680 KB Output is correct
9 Correct 7 ms 2808 KB Output is correct
10 Correct 7 ms 2808 KB Output is correct
11 Correct 7 ms 2808 KB Output is correct
12 Correct 7 ms 2808 KB Output is correct
13 Correct 8 ms 2808 KB Output is correct
14 Correct 9 ms 2936 KB Output is correct
15 Correct 8 ms 2936 KB Output is correct
16 Correct 10 ms 2808 KB Output is correct
17 Correct 8 ms 2808 KB Output is correct
18 Correct 8 ms 2808 KB Output is correct
19 Correct 7 ms 2808 KB Output is correct
20 Correct 8 ms 2808 KB Output is correct
21 Correct 7 ms 2808 KB Output is correct
22 Correct 8 ms 2808 KB Output is correct
23 Correct 8 ms 2808 KB Output is correct
24 Correct 7 ms 2808 KB Output is correct
25 Correct 8 ms 2808 KB Output is correct
26 Correct 7 ms 2808 KB Output is correct
27 Correct 7 ms 2808 KB Output is correct
28 Correct 7 ms 2808 KB Output is correct
29 Correct 7 ms 2808 KB Output is correct
30 Correct 9 ms 2808 KB Output is correct
31 Correct 8 ms 2808 KB Output is correct
32 Correct 7 ms 2808 KB Output is correct
33 Correct 7 ms 2812 KB Output is correct
34 Correct 7 ms 2808 KB Output is correct
35 Correct 7 ms 2808 KB Output is correct
36 Correct 7 ms 2808 KB Output is correct
37 Correct 7 ms 2808 KB Output is correct
38 Correct 7 ms 2808 KB Output is correct
39 Correct 7 ms 2808 KB Output is correct
40 Correct 7 ms 2808 KB Output is correct
41 Correct 7 ms 2808 KB Output is correct
42 Correct 7 ms 2808 KB Output is correct
43 Correct 8 ms 2812 KB Output is correct
44 Correct 9 ms 2808 KB Output is correct
45 Correct 9 ms 2936 KB Output is correct
46 Correct 21 ms 3576 KB Output is correct
47 Correct 21 ms 3576 KB Output is correct
48 Correct 21 ms 3576 KB Output is correct
49 Correct 12 ms 3576 KB Output is correct
50 Correct 12 ms 3576 KB Output is correct
51 Correct 13 ms 3576 KB Output is correct
52 Correct 14 ms 3832 KB Output is correct
53 Correct 14 ms 3832 KB Output is correct
54 Correct 15 ms 3836 KB Output is correct
55 Correct 14 ms 3832 KB Output is correct
56 Correct 13 ms 3576 KB Output is correct
57 Correct 29 ms 3576 KB Output is correct
58 Correct 33 ms 3576 KB Output is correct
59 Correct 30 ms 3576 KB Output is correct
60 Correct 29 ms 3576 KB Output is correct
61 Correct 14 ms 3576 KB Output is correct
62 Correct 14 ms 3576 KB Output is correct
63 Correct 14 ms 3576 KB Output is correct
64 Correct 19 ms 3448 KB Output is correct
65 Correct 19 ms 3448 KB Output is correct
66 Correct 21 ms 3576 KB Output is correct
67 Correct 21 ms 3448 KB Output is correct
68 Correct 11 ms 3576 KB Output is correct
69 Correct 13 ms 3832 KB Output is correct
70 Correct 13 ms 3704 KB Output is correct
71 Correct 13 ms 3576 KB Output is correct
72 Correct 29 ms 3576 KB Output is correct
73 Correct 29 ms 3576 KB Output is correct
74 Correct 12 ms 3576 KB Output is correct
75 Correct 14 ms 3580 KB Output is correct
76 Correct 14 ms 3576 KB Output is correct
77 Correct 14 ms 3576 KB Output is correct
78 Correct 13 ms 3448 KB Output is correct
79 Correct 13 ms 3448 KB Output is correct
80 Correct 13 ms 3448 KB Output is correct
81 Correct 14 ms 3576 KB Output is correct
82 Correct 15 ms 3576 KB Output is correct
83 Correct 15 ms 3576 KB Output is correct
84 Correct 13 ms 3448 KB Output is correct
85 Correct 13 ms 3448 KB Output is correct
86 Correct 14 ms 3448 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 7 ms 2680 KB Output is correct
4 Correct 7 ms 2808 KB Output is correct
5 Correct 8 ms 2808 KB Output is correct
6 Correct 7 ms 2808 KB Output is correct
7 Correct 7 ms 2808 KB Output is correct
8 Correct 7 ms 2680 KB Output is correct
9 Correct 7 ms 2808 KB Output is correct
10 Correct 7 ms 2808 KB Output is correct
11 Correct 7 ms 2808 KB Output is correct
12 Correct 7 ms 2808 KB Output is correct
13 Correct 8 ms 2808 KB Output is correct
14 Correct 9 ms 2936 KB Output is correct
15 Correct 8 ms 2936 KB Output is correct
16 Correct 10 ms 2808 KB Output is correct
17 Correct 8 ms 2808 KB Output is correct
18 Correct 8 ms 2808 KB Output is correct
19 Correct 7 ms 2808 KB Output is correct
20 Correct 8 ms 2808 KB Output is correct
21 Correct 7 ms 2808 KB Output is correct
22 Correct 8 ms 2808 KB Output is correct
23 Correct 8 ms 2808 KB Output is correct
24 Correct 7 ms 2808 KB Output is correct
25 Correct 8 ms 2808 KB Output is correct
26 Correct 7 ms 2808 KB Output is correct
27 Correct 7 ms 2808 KB Output is correct
28 Correct 7 ms 2808 KB Output is correct
29 Correct 7 ms 2808 KB Output is correct
30 Correct 9 ms 2808 KB Output is correct
31 Correct 8 ms 2808 KB Output is correct
32 Correct 7 ms 2808 KB Output is correct
33 Correct 7 ms 2812 KB Output is correct
34 Correct 7 ms 2808 KB Output is correct
35 Correct 7 ms 2808 KB Output is correct
36 Correct 7 ms 2808 KB Output is correct
37 Correct 7 ms 2808 KB Output is correct
38 Correct 7 ms 2808 KB Output is correct
39 Correct 7 ms 2808 KB Output is correct
40 Correct 7 ms 2808 KB Output is correct
41 Correct 7 ms 2808 KB Output is correct
42 Correct 7 ms 2808 KB Output is correct
43 Correct 8 ms 2812 KB Output is correct
44 Correct 9 ms 2808 KB Output is correct
45 Correct 9 ms 2936 KB Output is correct
46 Correct 21 ms 3576 KB Output is correct
47 Correct 21 ms 3576 KB Output is correct
48 Correct 21 ms 3576 KB Output is correct
49 Correct 12 ms 3576 KB Output is correct
50 Correct 12 ms 3576 KB Output is correct
51 Correct 13 ms 3576 KB Output is correct
52 Correct 14 ms 3832 KB Output is correct
53 Correct 14 ms 3832 KB Output is correct
54 Correct 15 ms 3836 KB Output is correct
55 Correct 14 ms 3832 KB Output is correct
56 Correct 13 ms 3576 KB Output is correct
57 Correct 29 ms 3576 KB Output is correct
58 Correct 33 ms 3576 KB Output is correct
59 Correct 30 ms 3576 KB Output is correct
60 Correct 29 ms 3576 KB Output is correct
61 Correct 14 ms 3576 KB Output is correct
62 Correct 14 ms 3576 KB Output is correct
63 Correct 14 ms 3576 KB Output is correct
64 Correct 19 ms 3448 KB Output is correct
65 Correct 19 ms 3448 KB Output is correct
66 Correct 21 ms 3576 KB Output is correct
67 Correct 21 ms 3448 KB Output is correct
68 Correct 11 ms 3576 KB Output is correct
69 Correct 13 ms 3832 KB Output is correct
70 Correct 13 ms 3704 KB Output is correct
71 Correct 13 ms 3576 KB Output is correct
72 Correct 29 ms 3576 KB Output is correct
73 Correct 29 ms 3576 KB Output is correct
74 Correct 12 ms 3576 KB Output is correct
75 Correct 14 ms 3580 KB Output is correct
76 Correct 14 ms 3576 KB Output is correct
77 Correct 14 ms 3576 KB Output is correct
78 Correct 13 ms 3448 KB Output is correct
79 Correct 13 ms 3448 KB Output is correct
80 Correct 13 ms 3448 KB Output is correct
81 Correct 14 ms 3576 KB Output is correct
82 Correct 15 ms 3576 KB Output is correct
83 Correct 15 ms 3576 KB Output is correct
84 Correct 13 ms 3448 KB Output is correct
85 Correct 13 ms 3448 KB Output is correct
86 Correct 14 ms 3448 KB Output is correct
87 Correct 50 ms 4832 KB Output is correct
88 Correct 161 ms 9204 KB Output is correct
89 Correct 714 ms 24284 KB Output is correct
90 Correct 702 ms 24284 KB Output is correct
91 Correct 698 ms 24280 KB Output is correct
92 Correct 202 ms 26716 KB Output is correct
93 Correct 199 ms 26712 KB Output is correct
94 Correct 206 ms 26716 KB Output is correct
95 Correct 269 ms 30116 KB Output is correct
96 Correct 280 ms 30684 KB Output is correct
97 Correct 274 ms 30552 KB Output is correct
98 Correct 275 ms 30428 KB Output is correct
99 Correct 276 ms 25820 KB Output is correct
100 Correct 1012 ms 23900 KB Output is correct
101 Correct 1125 ms 24156 KB Output is correct
102 Correct 1131 ms 24152 KB Output is correct
103 Correct 1121 ms 24152 KB Output is correct
104 Correct 282 ms 25944 KB Output is correct
105 Correct 282 ms 25820 KB Output is correct
106 Correct 294 ms 25864 KB Output is correct
107 Correct 579 ms 22104 KB Output is correct
108 Correct 590 ms 22124 KB Output is correct
109 Correct 679 ms 22916 KB Output is correct
110 Correct 143 ms 22872 KB Output is correct
111 Correct 262 ms 30044 KB Output is correct
112 Correct 225 ms 28632 KB Output is correct
113 Correct 223 ms 23768 KB Output is correct
114 Correct 1014 ms 23644 KB Output is correct
115 Correct 961 ms 21968 KB Output is correct
116 Correct 229 ms 23640 KB Output is correct
117 Correct 288 ms 24284 KB Output is correct
118 Correct 295 ms 23896 KB Output is correct
119 Correct 292 ms 23640 KB Output is correct
120 Correct 246 ms 22488 KB Output is correct
121 Correct 235 ms 22104 KB Output is correct
122 Correct 247 ms 21844 KB Output is correct
123 Correct 299 ms 24412 KB Output is correct
124 Correct 309 ms 24152 KB Output is correct
125 Correct 305 ms 23788 KB Output is correct
126 Correct 238 ms 22480 KB Output is correct
127 Correct 250 ms 22096 KB Output is correct
128 Correct 252 ms 22044 KB Output is correct