oj.uz

Submission #146570

# Submission time Handle Problem Language Result Execution time Memory
146570 2019-08-24T12:38:01 Z username Bridges (APIO19_bridges) C++14
100 / 100
 2891 ms 12648 KB 
#pragma GCC optimize("O3")
#include<stdint.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include<ext/rope>
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define VIS(it,con) for(auto it=con.begin();it!=con.end();++it)
#define pob pop_back
#define pf push_front
#define pof pop_front
#define MIN(x,y) (x=min(x,(y)))
#define MAX(x,y) (x=max(x,(y)))
#define mid (l+r>>1)
#define lch (idx*2+1)
#define rch (idx*2+2)
/*****************************************************************************/
#include<bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
#define REP(i,j,k) for(register int i=(j);i<(k);++i)
#define RREP(i,j,k) for(register int i=int(j)-1;i>=(k);--i)
#define ALL(a) a.begin(),a.end()
#define pb push_back
#define F first
#define S second
#define endl '\n'
//																#define __debug
#ifdef __debug
	#define IOS (void)0
	#define de(...) cerr<<__VA_ARGS__
	#define ar(a,s,t) {REP(__i,s,t)de(a[__i]<<' ');de(endl);}
#else
	#define IOS cin.tie(0),cout.tie(0),ios_base::sync_with_stdio(false)
	#define de(...) (void)0
	#define ar(...) (void)0
#endif
/***********************************default***********************************/
struct tup{int F,S,T;};
const int maxn=5e4+9,maxm=1e5+9,maxq=1e5+9,bl=800;
int n,m,q,fa[maxn],sz[maxn],res[maxq];
tup eds[maxm],qrs[maxq];
set<pii>st;
vector<pii>rf,rs;
vector<int>p;
bool mrk[maxm];
 
void init(int k){REP(i,0,k)fa[i]=i,sz[i]=1;}
 
int find(int x,bool c){return x==fa[x]?x:c?fa[x]=find(fa[x],c):find(fa[x],c);}
 
void unite(int x,int y,bool c,bool r){
	x=find(x,c),y=find(y,c);
	if(x==y)return;
	if(sz[x]>sz[y])swap(x,y);
	if(r)rf.pb({x,fa[x]}),rs.pb({y,sz[y]});
	fa[x]=y,sz[y]+=sz[x];
}
 
void restore(){
	RREP(i,rf.size(),0)fa[rf[i].F]=rf[i].S;
	RREP(i,rs.size(),0)sz[rs[i].F]=rs[i].S;
}
 
main(){
	IOS;
	cin>>n>>m;
	REP(i,0,m){
		int u,v,w;cin>>u>>v>>w,--u,--v,w=-w;
		eds[i]={u,v,w};
		st.insert({w,i});
	}
	cin>>q;
	REP(i,0,q)cin>>qrs[i].F>>qrs[i].S>>qrs[i].T,--qrs[i].S,qrs[i].T=-qrs[i].T;
	for(int l=0;l<q;l+=bl){
		int r=min(l+bl,q);
		p.clear();
		REP(i,l,r)if(qrs[i].F==2)p.pb(i);
		sort(ALL(p),[](int a,int b){return qrs[a].T<qrs[b].T;});
		init(n);
		auto it=st.begin();
		REP(i,0,p.size()){
			REP(i,l,r)if(qrs[i].F==1)mrk[qrs[i].S]=1;
			tup&qq=qrs[p[i]];
			while(it!=st.end()&&it->F<=qq.T){
				if(!mrk[it->S])unite(eds[it->S].F,eds[it->S].S,1,0);
				++it;
			}
			rf.clear(),rs.clear();
			RREP(j,p[i],l){
				tup&tq=qrs[j];
				if(tq.F==1&&mrk[tq.S]){
					if(tq.T<=qq.T)unite(eds[tq.S].F,eds[tq.S].S,0,1);
					mrk[tq.S]=0;
				}
			}
			REP(j,p[i],r){
				tup&tq=qrs[j];
				if(tq.F==1&&mrk[tq.S]){
					if(eds[tq.S].T<=qq.T)unite(eds[tq.S].F,eds[tq.S].S,0,1);
					mrk[tq.S]=0;
				}
			}
			res[p[i]]=sz[find(qq.S,0)];
			restore();
		}
		REP(i,l,r){
			tup&qq=qrs[i];
			if(qq.F==1){
				st.erase(st.find({eds[qq.S].T,qq.S}));
				st.insert({eds[qq.S].T=qq.T,qq.S});
			}
		}
	}
	REP(i,0,q)if(qrs[i].F==2)cout<<res[i]<<endl;
}

Compilation message

bridges.cpp:65:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
bridges.cpp: In function 'int main()':
bridges.cpp:21:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define REP(i,j,k) for(register int i=(j);i<(k);++i)
                                            ^
bridges.cpp:82:3: note: in expansion of macro 'REP'
   REP(i,0,p.size()){
   ^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 30 ms 760 KB Output is correct
4 Correct 19 ms 760 KB Output is correct
5 Correct 39 ms 760 KB Output is correct
6 Correct 33 ms 760 KB Output is correct
7 Correct 36 ms 632 KB Output is correct
8 Correct 38 ms 760 KB Output is correct
9 Correct 35 ms 636 KB Output is correct
10 Correct 41 ms 840 KB Output is correct
11 Correct 40 ms 760 KB Output is correct
12 Correct 40 ms 760 KB Output is correct
13 Correct 45 ms 760 KB Output is correct
14 Correct 42 ms 760 KB Output is correct
15 Correct 41 ms 760 KB Output is correct
16 Correct 36 ms 632 KB Output is correct
17 Correct 37 ms 632 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1594 ms 7436 KB Output is correct
2 Correct 1650 ms 7884 KB Output is correct
3 Correct 1578 ms 7676 KB Output is correct
4 Correct 1675 ms 7808 KB Output is correct
5 Correct 1660 ms 7616 KB Output is correct
6 Correct 2524 ms 8080 KB Output is correct
7 Correct 2556 ms 8004 KB Output is correct
8 Correct 2537 ms 8056 KB Output is correct
9 Correct 170 ms 3448 KB Output is correct
10 Correct 1205 ms 7356 KB Output is correct
11 Correct 1157 ms 7416 KB Output is correct
12 Correct 1268 ms 8312 KB Output is correct
13 Correct 1424 ms 7968 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1290 ms 6700 KB Output is correct
2 Correct 827 ms 4396 KB Output is correct
3 Correct 1362 ms 6748 KB Output is correct
4 Correct 1191 ms 6916 KB Output is correct
5 Correct 170 ms 3448 KB Output is correct
6 Correct 1319 ms 6788 KB Output is correct
7 Correct 1080 ms 6732 KB Output is correct
8 Correct 1000 ms 6776 KB Output is correct
9 Correct 842 ms 6844 KB Output is correct
10 Correct 800 ms 6880 KB Output is correct
11 Correct 833 ms 6532 KB Output is correct
12 Correct 766 ms 6632 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1935 ms 11380 KB Output is correct
2 Correct 173 ms 3484 KB Output is correct
3 Correct 236 ms 8336 KB Output is correct
4 Correct 126 ms 8440 KB Output is correct
5 Correct 1446 ms 11060 KB Output is correct
6 Correct 1951 ms 11684 KB Output is correct
7 Correct 1066 ms 11128 KB Output is correct
8 Correct 937 ms 8184 KB Output is correct
9 Correct 863 ms 8312 KB Output is correct
10 Correct 1000 ms 8252 KB Output is correct
11 Correct 1438 ms 10228 KB Output is correct
12 Correct 1366 ms 10236 KB Output is correct
13 Correct 1325 ms 10384 KB Output is correct
14 Correct 1000 ms 11000 KB Output is correct
15 Correct 1055 ms 11256 KB Output is correct
16 Correct 2337 ms 11756 KB Output is correct
17 Correct 2092 ms 11836 KB Output is correct
18 Correct 1895 ms 10732 KB Output is correct
19 Correct 2080 ms 10760 KB Output is correct
20 Correct 1672 ms 10000 KB Output is correct
21 Correct 1515 ms 9892 KB Output is correct
22 Correct 2414 ms 10688 KB Output is correct
23 Correct 1392 ms 9720 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1594 ms 7436 KB Output is correct
2 Correct 1650 ms 7884 KB Output is correct
3 Correct 1578 ms 7676 KB Output is correct
4 Correct 1675 ms 7808 KB Output is correct
5 Correct 1660 ms 7616 KB Output is correct
6 Correct 2524 ms 8080 KB Output is correct
7 Correct 2556 ms 8004 KB Output is correct
8 Correct 2537 ms 8056 KB Output is correct
9 Correct 170 ms 3448 KB Output is correct
10 Correct 1205 ms 7356 KB Output is correct
11 Correct 1157 ms 7416 KB Output is correct
12 Correct 1268 ms 8312 KB Output is correct
13 Correct 1424 ms 7968 KB Output is correct
14 Correct 1290 ms 6700 KB Output is correct
15 Correct 827 ms 4396 KB Output is correct
16 Correct 1362 ms 6748 KB Output is correct
17 Correct 1191 ms 6916 KB Output is correct
18 Correct 170 ms 3448 KB Output is correct
19 Correct 1319 ms 6788 KB Output is correct
20 Correct 1080 ms 6732 KB Output is correct
21 Correct 1000 ms 6776 KB Output is correct
22 Correct 842 ms 6844 KB Output is correct
23 Correct 800 ms 6880 KB Output is correct
24 Correct 833 ms 6532 KB Output is correct
25 Correct 766 ms 6632 KB Output is correct
26 Correct 1804 ms 8304 KB Output is correct
27 Correct 1925 ms 8312 KB Output is correct
28 Correct 1649 ms 8368 KB Output is correct
29 Correct 1246 ms 8440 KB Output is correct
30 Correct 2074 ms 8312 KB Output is correct
31 Correct 2041 ms 8188 KB Output is correct
32 Correct 2218 ms 8248 KB Output is correct
33 Correct 1796 ms 8328 KB Output is correct
34 Correct 1814 ms 8312 KB Output is correct
35 Correct 1968 ms 8568 KB Output is correct
36 Correct 1591 ms 8356 KB Output is correct
37 Correct 1351 ms 8352 KB Output is correct
38 Correct 1303 ms 8116 KB Output is correct
39 Correct 1018 ms 8204 KB Output is correct
40 Correct 1040 ms 8312 KB Output is correct
41 Correct 1024 ms 8504 KB Output is correct
42 Correct 948 ms 8252 KB Output is correct
43 Correct 938 ms 8224 KB Output is correct
44 Correct 914 ms 8184 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 30 ms 760 KB Output is correct
4 Correct 19 ms 760 KB Output is correct
5 Correct 39 ms 760 KB Output is correct
6 Correct 33 ms 760 KB Output is correct
7 Correct 36 ms 632 KB Output is correct
8 Correct 38 ms 760 KB Output is correct
9 Correct 35 ms 636 KB Output is correct
10 Correct 41 ms 840 KB Output is correct
11 Correct 40 ms 760 KB Output is correct
12 Correct 40 ms 760 KB Output is correct
13 Correct 45 ms 760 KB Output is correct
14 Correct 42 ms 760 KB Output is correct
15 Correct 41 ms 760 KB Output is correct
16 Correct 36 ms 632 KB Output is correct
17 Correct 37 ms 632 KB Output is correct
18 Correct 1594 ms 7436 KB Output is correct
19 Correct 1650 ms 7884 KB Output is correct
20 Correct 1578 ms 7676 KB Output is correct
21 Correct 1675 ms 7808 KB Output is correct
22 Correct 1660 ms 7616 KB Output is correct
23 Correct 2524 ms 8080 KB Output is correct
24 Correct 2556 ms 8004 KB Output is correct
25 Correct 2537 ms 8056 KB Output is correct
26 Correct 170 ms 3448 KB Output is correct
27 Correct 1205 ms 7356 KB Output is correct
28 Correct 1157 ms 7416 KB Output is correct
29 Correct 1268 ms 8312 KB Output is correct
30 Correct 1424 ms 7968 KB Output is correct
31 Correct 1290 ms 6700 KB Output is correct
32 Correct 827 ms 4396 KB Output is correct
33 Correct 1362 ms 6748 KB Output is correct
34 Correct 1191 ms 6916 KB Output is correct
35 Correct 170 ms 3448 KB Output is correct
36 Correct 1319 ms 6788 KB Output is correct
37 Correct 1080 ms 6732 KB Output is correct
38 Correct 1000 ms 6776 KB Output is correct
39 Correct 842 ms 6844 KB Output is correct
40 Correct 800 ms 6880 KB Output is correct
41 Correct 833 ms 6532 KB Output is correct
42 Correct 766 ms 6632 KB Output is correct
43 Correct 1935 ms 11380 KB Output is correct
44 Correct 173 ms 3484 KB Output is correct
45 Correct 236 ms 8336 KB Output is correct
46 Correct 126 ms 8440 KB Output is correct
47 Correct 1446 ms 11060 KB Output is correct
48 Correct 1951 ms 11684 KB Output is correct
49 Correct 1066 ms 11128 KB Output is correct
50 Correct 937 ms 8184 KB Output is correct
51 Correct 863 ms 8312 KB Output is correct
52 Correct 1000 ms 8252 KB Output is correct
53 Correct 1438 ms 10228 KB Output is correct
54 Correct 1366 ms 10236 KB Output is correct
55 Correct 1325 ms 10384 KB Output is correct
56 Correct 1000 ms 11000 KB Output is correct
57 Correct 1055 ms 11256 KB Output is correct
58 Correct 2337 ms 11756 KB Output is correct
59 Correct 2092 ms 11836 KB Output is correct
60 Correct 1895 ms 10732 KB Output is correct
61 Correct 2080 ms 10760 KB Output is correct
62 Correct 1672 ms 10000 KB Output is correct
63 Correct 1515 ms 9892 KB Output is correct
64 Correct 2414 ms 10688 KB Output is correct
65 Correct 1392 ms 9720 KB Output is correct
66 Correct 1804 ms 8304 KB Output is correct
67 Correct 1925 ms 8312 KB Output is correct
68 Correct 1649 ms 8368 KB Output is correct
69 Correct 1246 ms 8440 KB Output is correct
70 Correct 2074 ms 8312 KB Output is correct
71 Correct 2041 ms 8188 KB Output is correct
72 Correct 2218 ms 8248 KB Output is correct
73 Correct 1796 ms 8328 KB Output is correct
74 Correct 1814 ms 8312 KB Output is correct
75 Correct 1968 ms 8568 KB Output is correct
76 Correct 1591 ms 8356 KB Output is correct
77 Correct 1351 ms 8352 KB Output is correct
78 Correct 1303 ms 8116 KB Output is correct
79 Correct 1018 ms 8204 KB Output is correct
80 Correct 1040 ms 8312 KB Output is correct
81 Correct 1024 ms 8504 KB Output is correct
82 Correct 948 ms 8252 KB Output is correct
83 Correct 938 ms 8224 KB Output is correct
84 Correct 914 ms 8184 KB Output is correct
85 Correct 2418 ms 10468 KB Output is correct
86 Correct 290 ms 8604 KB Output is correct
87 Correct 108 ms 8440 KB Output is correct
88 Correct 1470 ms 10648 KB Output is correct
89 Correct 2316 ms 10632 KB Output is correct
90 Correct 1391 ms 10488 KB Output is correct
91 Correct 1842 ms 7296 KB Output is correct
92 Correct 1874 ms 7440 KB Output is correct
93 Correct 2812 ms 7624 KB Output is correct
94 Correct 2152 ms 9224 KB Output is correct
95 Correct 2092 ms 9264 KB Output is correct
96 Correct 1912 ms 9404 KB Output is correct
97 Correct 1313 ms 11040 KB Output is correct
98 Correct 1292 ms 10552 KB Output is correct
99 Correct 2891 ms 10764 KB Output is correct
100 Correct 2737 ms 12392 KB Output is correct
101 Correct 2668 ms 12648 KB Output is correct
102 Correct 2759 ms 12512 KB Output is correct
103 Correct 2114 ms 10772 KB Output is correct
104 Correct 1860 ms 11000 KB Output is correct
105 Correct 1806 ms 10744 KB Output is correct
106 Correct 1414 ms 10104 KB Output is correct
107 Correct 1845 ms 10968 KB Output is correct
108 Correct 2341 ms 11900 KB Output is correct
109 Correct 1589 ms 9592 KB Output is correct