oj.uz

Submission #369375

# Submission time Handle Problem Language Result Execution time Memory
369375 2021-02-21T13:09:45 Z YJU Swapping Cities (APIO20_swap) C++14
100 / 100
 550 ms 118636 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=1e6+5;
const ld pi=acos(-1);
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

struct edge{
	ll x,y,c;
	bool operator <(edge B){
		return c<B.c;
	}
}ed[N];

ll dir[N],cnt[N][2],weight[N],anc[N][20],dg[N],ptr;
vector<ll> v[N];

ll f(ll id){
	return (dir[id]==id?id:dir[id]=f(dir[id]));
}

void uni(ll par,ll son){
	cnt[par][0]+=cnt[son][0];
	cnt[par][1]+=cnt[son][1];
	dir[son]=par;
	v[par].pb(son);
}

ll dcnt=1,in[N],out[N];

bool is_anc(ll x,ll y){//x is y's ancestor? true : false
	return (in[x]<in[y]&&out[x]>out[y]);
}

void DFS(ll nd,ll pa){
	in[nd]=dcnt++;
	for(int i=1;i<20;i++){
		anc[nd][i]=anc[anc[nd][i-1]][i-1];
	}
	for(auto i:v[nd]){
		if(weight[i]==INF)weight[i]=weight[nd];
		//weight[i]=min(weight[i],weight[nd]);
		DFS(i,nd);
	}
	out[nd]=dcnt++;
}

void init(int _n,int _m,vector<int> _u,vector<int> _v,vector<int> _w){
	//prepare
	REP(i,N)dir[i]=i;
	ptr=_n;
	//
	REP(i,_m){
		ed[i].x=_u[i]+1,ed[i].y=_v[i]+1,ed[i].c=_w[i];
	}
	sort(ed,ed+_m);
	REP(i,_m){
		ll x=ed[i].x,y=ed[i].y;
		//cnt[i][0] for degree ==1,cnt[i][1] for degree >=3
		if(dg[x]==1)--cnt[f(x)][0];
		if(dg[y]==1)--cnt[f(y)][0];
		++dg[x];++dg[y];
		if(dg[x]==1)++cnt[f(x)][0];
		if(dg[y]==1)++cnt[f(y)][0];
		if(dg[x]==3)++cnt[f(x)][1];
		if(dg[y]==3)++cnt[f(y)][1];
		//
		weight[++ptr]=INF;
		if(f(x)==f(y)){
			anc[f(x)][0]=ptr;
			uni(ptr,f(x));
		}else{
			anc[f(x)][0]=ptr;
			anc[f(y)][0]=ptr;
			uni(ptr,f(x));
			uni(ptr,f(y));
		}
		if(cnt[ptr][0]==0||cnt[ptr][1]){
			weight[ptr]=ed[i].c;
		}
	}
	REP1(i,ptr){
		if(!anc[i][0])DFS(i,0);
	}
}

ll lca(ll nda,ll ndb){
	if(is_anc(nda,ndb))return nda;
	for(int i=19;i>=0;i--){
		if(anc[nda][i]&&!is_anc(anc[nda][i],ndb))nda=anc[nda][i];
	}
	return anc[nda][0];
}

int getMinimumFuelCapacity(int nda,int ndb){
	++nda;++ndb;
	return (f(nda)==f(ndb)?(weight[lca(nda,ndb)]==INF?-1:weight[lca(nda,ndb)]):-1);
}
/*
ll get(ll nda,ll ndb){
	return getMinimumFuelCapacity(nda,ndb);
}

int a[]={0,0};
int b[]={1,2};
int c[]={5,5};

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	init(3,2,a,b,c);
	cout<<get(1,2)<<"\n";
	return 0;
}

*/

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 21 ms 31724 KB Output is correct
4 Correct 24 ms 31852 KB Output is correct
5 Correct 22 ms 32112 KB Output is correct
6 Correct 23 ms 32236 KB Output is correct
7 Correct 22 ms 32236 KB Output is correct
8 Correct 22 ms 32236 KB Output is correct
9 Correct 159 ms 70252 KB Output is correct
10 Correct 186 ms 78828 KB Output is correct
11 Correct 180 ms 78060 KB Output is correct
12 Correct 193 ms 80876 KB Output is correct
13 Correct 211 ms 83180 KB Output is correct
14 Correct 169 ms 70464 KB Output is correct
15 Correct 297 ms 83316 KB Output is correct
16 Correct 331 ms 82072 KB Output is correct
17 Correct 303 ms 84944 KB Output is correct
18 Correct 418 ms 87376 KB Output is correct
19 Correct 109 ms 44652 KB Output is correct
20 Correct 295 ms 84600 KB Output is correct
21 Correct 294 ms 83040 KB Output is correct
22 Correct 314 ms 86224 KB Output is correct
23 Correct 434 ms 88656 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 466 ms 87436 KB Output is correct
4 Correct 404 ms 89944 KB Output is correct
5 Correct 415 ms 88640 KB Output is correct
6 Correct 399 ms 89644 KB Output is correct
7 Correct 421 ms 89320 KB Output is correct
8 Correct 404 ms 87132 KB Output is correct
9 Correct 432 ms 88936 KB Output is correct
10 Correct 411 ms 86692 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 21 ms 31724 KB Output is correct
4 Correct 24 ms 31852 KB Output is correct
5 Correct 22 ms 32112 KB Output is correct
6 Correct 23 ms 32236 KB Output is correct
7 Correct 22 ms 32236 KB Output is correct
8 Correct 22 ms 32236 KB Output is correct
9 Correct 23 ms 31724 KB Output is correct
10 Correct 22 ms 32256 KB Output is correct
11 Correct 22 ms 32108 KB Output is correct
12 Correct 22 ms 32108 KB Output is correct
13 Correct 21 ms 32108 KB Output is correct
14 Correct 21 ms 32108 KB Output is correct
15 Correct 23 ms 32236 KB Output is correct
16 Correct 22 ms 32108 KB Output is correct
17 Correct 22 ms 32236 KB Output is correct
18 Correct 22 ms 32108 KB Output is correct
19 Correct 24 ms 32108 KB Output is correct
20 Correct 22 ms 32108 KB Output is correct
21 Correct 25 ms 32236 KB Output is correct
22 Correct 22 ms 32364 KB Output is correct
23 Correct 22 ms 32108 KB Output is correct
24 Correct 23 ms 32364 KB Output is correct
25 Correct 23 ms 32492 KB Output is correct
26 Correct 22 ms 32492 KB Output is correct
27 Correct 22 ms 32236 KB Output is correct
28 Correct 22 ms 32492 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 21 ms 31724 KB Output is correct
4 Correct 21 ms 31724 KB Output is correct
5 Correct 24 ms 31852 KB Output is correct
6 Correct 22 ms 32112 KB Output is correct
7 Correct 23 ms 32236 KB Output is correct
8 Correct 22 ms 32236 KB Output is correct
9 Correct 22 ms 32236 KB Output is correct
10 Correct 159 ms 70252 KB Output is correct
11 Correct 186 ms 78828 KB Output is correct
12 Correct 180 ms 78060 KB Output is correct
13 Correct 193 ms 80876 KB Output is correct
14 Correct 211 ms 83180 KB Output is correct
15 Correct 22 ms 32256 KB Output is correct
16 Correct 22 ms 32108 KB Output is correct
17 Correct 22 ms 32108 KB Output is correct
18 Correct 21 ms 32108 KB Output is correct
19 Correct 21 ms 32108 KB Output is correct
20 Correct 23 ms 32236 KB Output is correct
21 Correct 22 ms 32108 KB Output is correct
22 Correct 22 ms 32236 KB Output is correct
23 Correct 22 ms 32108 KB Output is correct
24 Correct 24 ms 32108 KB Output is correct
25 Correct 22 ms 32108 KB Output is correct
26 Correct 25 ms 32236 KB Output is correct
27 Correct 22 ms 32364 KB Output is correct
28 Correct 22 ms 32108 KB Output is correct
29 Correct 23 ms 32364 KB Output is correct
30 Correct 23 ms 32492 KB Output is correct
31 Correct 22 ms 32492 KB Output is correct
32 Correct 22 ms 32236 KB Output is correct
33 Correct 22 ms 32492 KB Output is correct
34 Correct 38 ms 38380 KB Output is correct
35 Correct 193 ms 80492 KB Output is correct
36 Correct 194 ms 80748 KB Output is correct
37 Correct 193 ms 80492 KB Output is correct
38 Correct 186 ms 79724 KB Output is correct
39 Correct 193 ms 79596 KB Output is correct
40 Correct 184 ms 75628 KB Output is correct
41 Correct 196 ms 80876 KB Output is correct
42 Correct 198 ms 80620 KB Output is correct
43 Correct 205 ms 83692 KB Output is correct
44 Correct 198 ms 80772 KB Output is correct
45 Correct 242 ms 94744 KB Output is correct
46 Correct 202 ms 80620 KB Output is correct
47 Correct 204 ms 80492 KB Output is correct
48 Correct 209 ms 85012 KB Output is correct
49 Correct 173 ms 85408 KB Output is correct
50 Correct 137 ms 73964 KB Output is correct
51 Correct 208 ms 85996 KB Output is correct
52 Correct 273 ms 101868 KB Output is correct
53 Correct 296 ms 106732 KB Output is correct
54 Correct 312 ms 114924 KB Output is correct
55 Correct 186 ms 83308 KB Output is correct
56 Correct 295 ms 106732 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 21 ms 31724 KB Output is correct
4 Correct 24 ms 31852 KB Output is correct
5 Correct 22 ms 32112 KB Output is correct
6 Correct 23 ms 32236 KB Output is correct
7 Correct 22 ms 32236 KB Output is correct
8 Correct 22 ms 32236 KB Output is correct
9 Correct 159 ms 70252 KB Output is correct
10 Correct 186 ms 78828 KB Output is correct
11 Correct 180 ms 78060 KB Output is correct
12 Correct 193 ms 80876 KB Output is correct
13 Correct 211 ms 83180 KB Output is correct
14 Correct 169 ms 70464 KB Output is correct
15 Correct 297 ms 83316 KB Output is correct
16 Correct 331 ms 82072 KB Output is correct
17 Correct 303 ms 84944 KB Output is correct
18 Correct 418 ms 87376 KB Output is correct
19 Correct 466 ms 87436 KB Output is correct
20 Correct 404 ms 89944 KB Output is correct
21 Correct 415 ms 88640 KB Output is correct
22 Correct 399 ms 89644 KB Output is correct
23 Correct 421 ms 89320 KB Output is correct
24 Correct 404 ms 87132 KB Output is correct
25 Correct 432 ms 88936 KB Output is correct
26 Correct 411 ms 86692 KB Output is correct
27 Correct 22 ms 32256 KB Output is correct
28 Correct 22 ms 32108 KB Output is correct
29 Correct 22 ms 32108 KB Output is correct
30 Correct 21 ms 32108 KB Output is correct
31 Correct 21 ms 32108 KB Output is correct
32 Correct 23 ms 32236 KB Output is correct
33 Correct 22 ms 32108 KB Output is correct
34 Correct 22 ms 32236 KB Output is correct
35 Correct 22 ms 32108 KB Output is correct
36 Correct 38 ms 38380 KB Output is correct
37 Correct 193 ms 80492 KB Output is correct
38 Correct 194 ms 80748 KB Output is correct
39 Correct 193 ms 80492 KB Output is correct
40 Correct 186 ms 79724 KB Output is correct
41 Correct 193 ms 79596 KB Output is correct
42 Correct 184 ms 75628 KB Output is correct
43 Correct 196 ms 80876 KB Output is correct
44 Correct 198 ms 80620 KB Output is correct
45 Correct 205 ms 83692 KB Output is correct
46 Correct 198 ms 80772 KB Output is correct
47 Correct 46 ms 38252 KB Output is correct
48 Correct 304 ms 85488 KB Output is correct
49 Correct 306 ms 85328 KB Output is correct
50 Correct 307 ms 85328 KB Output is correct
51 Correct 302 ms 85120 KB Output is correct
52 Correct 304 ms 82428 KB Output is correct
53 Correct 258 ms 70112 KB Output is correct
54 Correct 310 ms 86352 KB Output is correct
55 Correct 319 ms 85472 KB Output is correct
56 Correct 431 ms 87932 KB Output is correct
57 Correct 329 ms 86352 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 31724 KB Output is correct
2 Correct 21 ms 31724 KB Output is correct
3 Correct 21 ms 31724 KB Output is correct
4 Correct 21 ms 31724 KB Output is correct
5 Correct 24 ms 31852 KB Output is correct
6 Correct 22 ms 32112 KB Output is correct
7 Correct 23 ms 32236 KB Output is correct
8 Correct 22 ms 32236 KB Output is correct
9 Correct 22 ms 32236 KB Output is correct
10 Correct 159 ms 70252 KB Output is correct
11 Correct 186 ms 78828 KB Output is correct
12 Correct 180 ms 78060 KB Output is correct
13 Correct 193 ms 80876 KB Output is correct
14 Correct 211 ms 83180 KB Output is correct
15 Correct 169 ms 70464 KB Output is correct
16 Correct 297 ms 83316 KB Output is correct
17 Correct 331 ms 82072 KB Output is correct
18 Correct 303 ms 84944 KB Output is correct
19 Correct 418 ms 87376 KB Output is correct
20 Correct 466 ms 87436 KB Output is correct
21 Correct 404 ms 89944 KB Output is correct
22 Correct 415 ms 88640 KB Output is correct
23 Correct 399 ms 89644 KB Output is correct
24 Correct 421 ms 89320 KB Output is correct
25 Correct 404 ms 87132 KB Output is correct
26 Correct 432 ms 88936 KB Output is correct
27 Correct 411 ms 86692 KB Output is correct
28 Correct 22 ms 32256 KB Output is correct
29 Correct 22 ms 32108 KB Output is correct
30 Correct 22 ms 32108 KB Output is correct
31 Correct 21 ms 32108 KB Output is correct
32 Correct 21 ms 32108 KB Output is correct
33 Correct 23 ms 32236 KB Output is correct
34 Correct 22 ms 32108 KB Output is correct
35 Correct 22 ms 32236 KB Output is correct
36 Correct 22 ms 32108 KB Output is correct
37 Correct 38 ms 38380 KB Output is correct
38 Correct 193 ms 80492 KB Output is correct
39 Correct 194 ms 80748 KB Output is correct
40 Correct 193 ms 80492 KB Output is correct
41 Correct 186 ms 79724 KB Output is correct
42 Correct 193 ms 79596 KB Output is correct
43 Correct 184 ms 75628 KB Output is correct
44 Correct 196 ms 80876 KB Output is correct
45 Correct 198 ms 80620 KB Output is correct
46 Correct 205 ms 83692 KB Output is correct
47 Correct 198 ms 80772 KB Output is correct
48 Correct 46 ms 38252 KB Output is correct
49 Correct 304 ms 85488 KB Output is correct
50 Correct 306 ms 85328 KB Output is correct
51 Correct 307 ms 85328 KB Output is correct
52 Correct 302 ms 85120 KB Output is correct
53 Correct 304 ms 82428 KB Output is correct
54 Correct 258 ms 70112 KB Output is correct
55 Correct 310 ms 86352 KB Output is correct
56 Correct 319 ms 85472 KB Output is correct
57 Correct 431 ms 87932 KB Output is correct
58 Correct 329 ms 86352 KB Output is correct
59 Correct 109 ms 44652 KB Output is correct
60 Correct 295 ms 84600 KB Output is correct
61 Correct 294 ms 83040 KB Output is correct
62 Correct 314 ms 86224 KB Output is correct
63 Correct 434 ms 88656 KB Output is correct
64 Correct 24 ms 32108 KB Output is correct
65 Correct 22 ms 32108 KB Output is correct
66 Correct 25 ms 32236 KB Output is correct
67 Correct 22 ms 32364 KB Output is correct
68 Correct 22 ms 32108 KB Output is correct
69 Correct 23 ms 32364 KB Output is correct
70 Correct 23 ms 32492 KB Output is correct
71 Correct 22 ms 32492 KB Output is correct
72 Correct 22 ms 32236 KB Output is correct
73 Correct 22 ms 32492 KB Output is correct
74 Correct 242 ms 94744 KB Output is correct
75 Correct 202 ms 80620 KB Output is correct
76 Correct 204 ms 80492 KB Output is correct
77 Correct 209 ms 85012 KB Output is correct
78 Correct 173 ms 85408 KB Output is correct
79 Correct 137 ms 73964 KB Output is correct
80 Correct 208 ms 85996 KB Output is correct
81 Correct 273 ms 101868 KB Output is correct
82 Correct 296 ms 106732 KB Output is correct
83 Correct 312 ms 114924 KB Output is correct
84 Correct 186 ms 83308 KB Output is correct
85 Correct 295 ms 106732 KB Output is correct
86 Correct 140 ms 54940 KB Output is correct
87 Correct 312 ms 85456 KB Output is correct
88 Correct 302 ms 85584 KB Output is correct
89 Correct 461 ms 87304 KB Output is correct
90 Correct 292 ms 92484 KB Output is correct
91 Correct 352 ms 88592 KB Output is correct
92 Correct 452 ms 89048 KB Output is correct
93 Correct 426 ms 105684 KB Output is correct
94 Correct 550 ms 111108 KB Output is correct
95 Correct 449 ms 118636 KB Output is correct
96 Correct 421 ms 88316 KB Output is correct
97 Correct 510 ms 99244 KB Output is correct