oj.uz

Submission #135042

# Submission time Handle Problem Language Result Execution time Memory
135042 2019-07-23T14:56:48 Z ryansee Bridges (APIO19_bridges) C++14
73 / 100
 3000 ms 10672 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native,avx2,fma")

#include "bits/stdc++.h"
using namespace std;
#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define LLINF ((long long) 1e18)//1234567890987654321
#define INF 1234567890ll
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second	
#define db 0
#define EPS (1e-7)    //0.0000001 the value
#define PI (acos(-1))
#define MAXN (300006/3)
#define ll /*long long*/ int 
#define ld long double
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
#define FOR(ii, ss, ee) for(ll ii = ss; ii < ee; ++ii)
#define space " "
#define cbr cerr << "hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ((ll)x.size())
#define ph push
#define emp emplace
#define btinpct(x) __builtin_popcountll(x)
#define p2(x) (1LL<<(x))
#define all(x) (x).begin(), (x).end()
#define lbd(x, y) lower_bound(all(x), y)
#define ubd(x, y) upper_bound(all(x), y)
typedef pair <ll, ll> pi;
typedef pair <ll, pi> spi;
typedef pair <pi, pi> dpi;
inline ll rand(ll x, ll y) { ++y; return (rng() % (y-x)) + x; } //inclusivesss
ll n,m,q;
struct edge {
	ll a,b,w,i,in;
	bool operator < (const edge &e) const {
		return w>e.w;
	}
};
edge edges[MAXN];
int pos[MAXN];
struct query {
	ll b,r,i,q,f;
	bool operator < (const query &e) const {
		if(b!=e.b)return b<e.b;
		return i<e.i;
	} 
}; vector<query>bkts[203];
ll magic=500,co=0; ll other=203;
deque<spi>Q;
stack<ll>stk;
struct ufds_ {
	int p[MAXN],sz[MAXN];
	ufds_() { FOR(i,0,n+1)p[i]=i,sz[i]=1; }
	void merge_b4(ll x, ll y){
		x=find_real(x),y=find_real(y);
		if(x==y)return;
		p[x]=y;
		sz[y]+=sz[x];
	}
	ll find_real(ll x) { return (p[x]==x)?x:p[x]=find_real(p[x]);}
	void fake_merge(ll x, ll y) {
		x=find_fake(x),y=find_fake(y);
		if(x==y)return;
		if(sz[x]>sz[y])swap(x,y);//sz[x]<=sz[y];
		p[x]=y;
		sz[y]+=sz[x];
		stk.ph(x);
	}
	ll find_fake(ll x) { return (p[x]==x)?x:find_fake(p[x]);}
	void rollback(){
		while(stk.size()){
			sz[p[stk.top()]]-=sz[stk.top()];
			p[stk.top()]=stk.top();
			stk.pop();
		}
		return;
	}
} ufds;
int ans[MAXN];
int main()
{ mmst(ans,-1);
	FAST
	cin>>n>>m;
	FOR(i,0,m){
		cin>>edges[i].a>>edges[i].b>>edges[i].w;edges[i].i=i;edges[i].in=1;
	}
	sort(edges,edges+m);
	FOR(i,0,m)pos[edges[i].i]=i;
	cin>>q;
	FOR(i,0,q){
		ll t;cin>>t;
		if(t==1){
			ll b,r;cin>>b>>r;--b;
			bkts[co].pb({b,r,i,0});
			if(bkts[co].size()>magic)++co;
		} else {
			ll p,w;cin>>p>>w;
			bkts[co].pb({p,w,i,1});
			if(bkts[co].size()>magic)++co;
		}
	}
	ufds=ufds_();
	FOR(bk,0,other){ if(bkts[bk].empty())break; 
		for(auto i:bkts[bk]){
			if(!i.q)edges[pos[i.b]].in=0;
		}
		vector<query>hmm,handle;
		for(auto i:bkts[bk]){
			if(i.q)hmm.pb(i);
			else handle.pb(i);
		}
		sort(all(hmm),[](query x, query y){return x.r>y.r;});ufds=ufds_();
		sort(all(handle)); FOR(i,1,siz(handle))if(handle[i-1].b==handle[i].b)handle[i].f=1;
		ll co=0;
		for(auto i:hmm){ 
			while(co<m&&edges[co].w>=i.r){
				if(edges[co].in)ufds.merge_b4(edges[co].a,edges[co].b);
				++co;
			}
			auto tmp=i;
			FOR(i,0,siz(handle))handle[i].q=0;
			FOR(i,0,siz(handle)-1)if(handle[i+1].b==handle[i].b&&handle[i+1].i<tmp.i)handle[i].q=1;
			for(auto j:handle)if(!j.q&&((j.i<i.i&&j.r>=i.r)||(j.i>i.i&&edges[pos[j.b]].w>=i.r&&!j.f))){
				ufds.fake_merge(edges[pos[j.b]].a,edges[pos[j.b]].b);
			}
			// cerr<<i.i<<' '<<co<<' '<<ufds.find_fake(1)<<' '<<ufds.find_fake(2)<<' '<<ufds.find_fake(3)<<' '<<ufds.sz[1]<<' '<<ufds.sz[2]<<' '<<ufds.sz[3]<<'\n';
			ans[i.i]=ufds.sz[ufds.find_fake(i.b)];
			ufds.rollback();
		}
		for(auto i:bkts[bk])if(!i.q){
			edges[pos[i.b]].in=1;
			edges[pos[i.b]].w=i.r;
		}
		sort(edges,edges+m);
		FOR(i,0,m)pos[edges[i].i]=i;
	}
	FOR(i,0,q)if(~ans[i]){
		cout<<ans[i]<<'\n';
	}
}
/*
3 4
1 2 5
2 3 2
3 1 4
2 3 8
5
2 1 5
1 4 1
2 2 5
1 1 1
2 3 2
*/
/*
7 8
1 2 5
1 6 5
2 3 5
2 7 5
3 4 5
4 5 5
5 6 5
6 7 5
12
2 1 6
1 1 1
2 1 2
1 2 3
2 2 2
1 5 2
1 3 1
2 2 4
2 4 2
1 8 1
2 1 1
2 1 3
* 
* 5 2
4 3 3
4 1 10
5
2 1 5 
1 2 9
1 1 6
1 1 2
2 3 4
* 
* Ans:
* 1
* 
* 5 2
4 3 3
4 1 10
8
2 1 5
1 2 2
1 2 9
1 1 6
1 1 2
2 3 4
1 1 3
2 1 6

*/

Compilation message

bridges.cpp: In function 'int main()':
bridges.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(bkts[co].size()>magic)++co;
       ~~~~~~~~~~~~~~~^~~~~~
bridges.cpp:105:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(bkts[co].size()>magic)++co;
       ~~~~~~~~~~~~~~~^~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 25 ms 1912 KB Output is correct
4 Correct 9 ms 1912 KB Output is correct
5 Correct 24 ms 1912 KB Output is correct
6 Correct 20 ms 2004 KB Output is correct
7 Correct 23 ms 1816 KB Output is correct
8 Correct 25 ms 1912 KB Output is correct
9 Correct 23 ms 1912 KB Output is correct
10 Correct 26 ms 2040 KB Output is correct
11 Correct 25 ms 1912 KB Output is correct
12 Correct 26 ms 1912 KB Output is correct
13 Correct 32 ms 1912 KB Output is correct
14 Correct 29 ms 2016 KB Output is correct
15 Correct 27 ms 1912 KB Output is correct
16 Correct 23 ms 1812 KB Output is correct
17 Correct 24 ms 1912 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1455 ms 8080 KB Output is correct
2 Correct 1414 ms 7928 KB Output is correct
3 Correct 1444 ms 7916 KB Output is correct
4 Correct 1467 ms 8148 KB Output is correct
5 Correct 1506 ms 8056 KB Output is correct
6 Correct 1892 ms 7996 KB Output is correct
7 Correct 1889 ms 7992 KB Output is correct
8 Correct 1893 ms 8024 KB Output is correct
9 Correct 63 ms 5172 KB Output is correct
10 Correct 1523 ms 6936 KB Output is correct
11 Correct 1403 ms 6940 KB Output is correct
12 Correct 1239 ms 8032 KB Output is correct
13 Correct 1298 ms 7896 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1299 ms 7040 KB Output is correct
2 Correct 943 ms 5572 KB Output is correct
3 Correct 1832 ms 6884 KB Output is correct
4 Correct 1454 ms 7284 KB Output is correct
5 Correct 62 ms 5112 KB Output is correct
6 Correct 1696 ms 7060 KB Output is correct
7 Correct 1403 ms 7060 KB Output is correct
8 Correct 1214 ms 7032 KB Output is correct
9 Correct 1085 ms 7296 KB Output is correct
10 Correct 1012 ms 7200 KB Output is correct
11 Correct 1116 ms 7032 KB Output is correct
12 Correct 983 ms 7032 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1740 ms 10548 KB Output is correct
2 Correct 61 ms 5112 KB Output is correct
3 Correct 118 ms 5928 KB Output is correct
4 Correct 190 ms 6136 KB Output is correct
5 Correct 2374 ms 9152 KB Output is correct
6 Correct 1716 ms 10588 KB Output is correct
7 Correct 2353 ms 9052 KB Output is correct
8 Correct 731 ms 8168 KB Output is correct
9 Correct 707 ms 8184 KB Output is correct
10 Correct 735 ms 7964 KB Output is correct
11 Correct 1114 ms 9224 KB Output is correct
12 Correct 1111 ms 9368 KB Output is correct
13 Correct 1136 ms 9356 KB Output is correct
14 Correct 2512 ms 9180 KB Output is correct
15 Correct 2368 ms 9140 KB Output is correct
16 Correct 1680 ms 10460 KB Output is correct
17 Correct 1660 ms 10428 KB Output is correct
18 Correct 1614 ms 10672 KB Output is correct
19 Correct 1633 ms 10544 KB Output is correct
20 Correct 1281 ms 9752 KB Output is correct
21 Correct 1279 ms 9620 KB Output is correct
22 Correct 1615 ms 10296 KB Output is correct
23 Correct 1628 ms 8424 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1455 ms 8080 KB Output is correct
2 Correct 1414 ms 7928 KB Output is correct
3 Correct 1444 ms 7916 KB Output is correct
4 Correct 1467 ms 8148 KB Output is correct
5 Correct 1506 ms 8056 KB Output is correct
6 Correct 1892 ms 7996 KB Output is correct
7 Correct 1889 ms 7992 KB Output is correct
8 Correct 1893 ms 8024 KB Output is correct
9 Correct 63 ms 5172 KB Output is correct
10 Correct 1523 ms 6936 KB Output is correct
11 Correct 1403 ms 6940 KB Output is correct
12 Correct 1239 ms 8032 KB Output is correct
13 Correct 1298 ms 7896 KB Output is correct
14 Correct 1299 ms 7040 KB Output is correct
15 Correct 943 ms 5572 KB Output is correct
16 Correct 1832 ms 6884 KB Output is correct
17 Correct 1454 ms 7284 KB Output is correct
18 Correct 62 ms 5112 KB Output is correct
19 Correct 1696 ms 7060 KB Output is correct
20 Correct 1403 ms 7060 KB Output is correct
21 Correct 1214 ms 7032 KB Output is correct
22 Correct 1085 ms 7296 KB Output is correct
23 Correct 1012 ms 7200 KB Output is correct
24 Correct 1116 ms 7032 KB Output is correct
25 Correct 983 ms 7032 KB Output is correct
26 Correct 2059 ms 8192 KB Output is correct
27 Correct 2231 ms 7832 KB Output is correct
28 Correct 1945 ms 8100 KB Output is correct
29 Correct 1531 ms 8016 KB Output is correct
30 Correct 1909 ms 7936 KB Output is correct
31 Correct 1914 ms 7908 KB Output is correct
32 Correct 2050 ms 7924 KB Output is correct
33 Correct 1677 ms 8056 KB Output is correct
34 Correct 1747 ms 7984 KB Output is correct
35 Correct 1694 ms 8056 KB Output is correct
36 Correct 1456 ms 7940 KB Output is correct
37 Correct 1431 ms 7928 KB Output is correct
38 Correct 1435 ms 7928 KB Output is correct
39 Correct 1209 ms 8168 KB Output is correct
40 Correct 1207 ms 8040 KB Output is correct
41 Correct 1213 ms 8048 KB Output is correct
42 Correct 1180 ms 7896 KB Output is correct
43 Correct 1217 ms 7880 KB Output is correct
44 Correct 1191 ms 7800 KB Output is correct

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 25 ms 1912 KB Output is correct
4 Correct 9 ms 1912 KB Output is correct
5 Correct 24 ms 1912 KB Output is correct
6 Correct 20 ms 2004 KB Output is correct
7 Correct 23 ms 1816 KB Output is correct
8 Correct 25 ms 1912 KB Output is correct
9 Correct 23 ms 1912 KB Output is correct
10 Correct 26 ms 2040 KB Output is correct
11 Correct 25 ms 1912 KB Output is correct
12 Correct 26 ms 1912 KB Output is correct
13 Correct 32 ms 1912 KB Output is correct
14 Correct 29 ms 2016 KB Output is correct
15 Correct 27 ms 1912 KB Output is correct
16 Correct 23 ms 1812 KB Output is correct
17 Correct 24 ms 1912 KB Output is correct
18 Correct 1455 ms 8080 KB Output is correct
19 Correct 1414 ms 7928 KB Output is correct
20 Correct 1444 ms 7916 KB Output is correct
21 Correct 1467 ms 8148 KB Output is correct
22 Correct 1506 ms 8056 KB Output is correct
23 Correct 1892 ms 7996 KB Output is correct
24 Correct 1889 ms 7992 KB Output is correct
25 Correct 1893 ms 8024 KB Output is correct
26 Correct 63 ms 5172 KB Output is correct
27 Correct 1523 ms 6936 KB Output is correct
28 Correct 1403 ms 6940 KB Output is correct
29 Correct 1239 ms 8032 KB Output is correct
30 Correct 1298 ms 7896 KB Output is correct
31 Correct 1299 ms 7040 KB Output is correct
32 Correct 943 ms 5572 KB Output is correct
33 Correct 1832 ms 6884 KB Output is correct
34 Correct 1454 ms 7284 KB Output is correct
35 Correct 62 ms 5112 KB Output is correct
36 Correct 1696 ms 7060 KB Output is correct
37 Correct 1403 ms 7060 KB Output is correct
38 Correct 1214 ms 7032 KB Output is correct
39 Correct 1085 ms 7296 KB Output is correct
40 Correct 1012 ms 7200 KB Output is correct
41 Correct 1116 ms 7032 KB Output is correct
42 Correct 983 ms 7032 KB Output is correct
43 Correct 1740 ms 10548 KB Output is correct
44 Correct 61 ms 5112 KB Output is correct
45 Correct 118 ms 5928 KB Output is correct
46 Correct 190 ms 6136 KB Output is correct
47 Correct 2374 ms 9152 KB Output is correct
48 Correct 1716 ms 10588 KB Output is correct
49 Correct 2353 ms 9052 KB Output is correct
50 Correct 731 ms 8168 KB Output is correct
51 Correct 707 ms 8184 KB Output is correct
52 Correct 735 ms 7964 KB Output is correct
53 Correct 1114 ms 9224 KB Output is correct
54 Correct 1111 ms 9368 KB Output is correct
55 Correct 1136 ms 9356 KB Output is correct
56 Correct 2512 ms 9180 KB Output is correct
57 Correct 2368 ms 9140 KB Output is correct
58 Correct 1680 ms 10460 KB Output is correct
59 Correct 1660 ms 10428 KB Output is correct
60 Correct 1614 ms 10672 KB Output is correct
61 Correct 1633 ms 10544 KB Output is correct
62 Correct 1281 ms 9752 KB Output is correct
63 Correct 1279 ms 9620 KB Output is correct
64 Correct 1615 ms 10296 KB Output is correct
65 Correct 1628 ms 8424 KB Output is correct
66 Correct 2059 ms 8192 KB Output is correct
67 Correct 2231 ms 7832 KB Output is correct
68 Correct 1945 ms 8100 KB Output is correct
69 Correct 1531 ms 8016 KB Output is correct
70 Correct 1909 ms 7936 KB Output is correct
71 Correct 1914 ms 7908 KB Output is correct
72 Correct 2050 ms 7924 KB Output is correct
73 Correct 1677 ms 8056 KB Output is correct
74 Correct 1747 ms 7984 KB Output is correct
75 Correct 1694 ms 8056 KB Output is correct
76 Correct 1456 ms 7940 KB Output is correct
77 Correct 1431 ms 7928 KB Output is correct
78 Correct 1435 ms 7928 KB Output is correct
79 Correct 1209 ms 8168 KB Output is correct
80 Correct 1207 ms 8040 KB Output is correct
81 Correct 1213 ms 8048 KB Output is correct
82 Correct 1180 ms 7896 KB Output is correct
83 Correct 1217 ms 7880 KB Output is correct
84 Correct 1191 ms 7800 KB Output is correct
85 Execution timed out 3092 ms 10084 KB Time limit exceeded
86 Halted 0 ms 0 KB -