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답안 #346435

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
346435 2021-01-09T16:43:26 Z alishahali1382 Wild Boar (JOI18_wild_boar) C++14
100 / 100
 6813 ms 480112 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O2,unroll-loops")
//#pragma GCC optimize("no-stack-protector,fast-math")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<pii, int> piii;
typedef pair<ll, ll> pll;
#define debug(x) cerr<<#x<<'='<<(x)<<endl;
#define debugp(x) cerr<<#x<<"= {"<<(x.first)<<", "<<(x.second)<<"}"<<endl;
#define debug2(x, y) cerr<<"{"<<#x<<", "<<#y<<"} = {"<<(x)<<", "<<(y)<<"}"<<endl;
#define debugv(v) {cerr<<#v<<" : ";for (auto x:v) cerr<<x<<' ';cerr<<endl;}
#define all(x) x.begin(), x.end()
#define pb push_back
#define kill(x) return cout<<x<<'\n', 0;

const int inf=1000000010;
const ll INF=1000000000000001000LL;
const int mod=1000000007;
const int MAXN=100010, N=2005, M=4005;
typedef array<pair<ll, pii>, 5> DATA;

int n, m, T, L, k, u, v, x, y, t, a, b, ans;
int U[M], V[M], W[M], X[MAXN];
ll dist[M][M];
bool mark[M][M];
DATA F[N][N];
DATA seg[MAXN<<2];
vector<int> G[N];
priority_queue<pll, vector<pll>, greater<pll>> pq;

DATA Merge(DATA X, DATA Y){
	vector<pair<ll, pii>> vec;
	for (int i=0; i<5; i++) for (int j=0; j<5; j++) if (X[i].first+Y[j].first<INF && X[i].second.second!=Y[j].second.first){
		int a=X[i].second.first, b=Y[j].second.second;
		ll w=X[i].first+Y[j].first;
		vec.pb({w, {a, b}});
	}
	DATA Z=F[0][0];
	sort(all(vec));
	if (vec.empty()) return Z;
	Z[0]=vec[0];
	int sz=1, lastx=-1, lasty=-1, tedx=0, tedy=0;
	int x=Z[0].second.first, y=Z[0].second.second;
	for (int i=1; i<vec.size() && sz<5; i++){
		int a=vec[i].second.first, b=vec[i].second.second;
		bool okx=(a!=x && b!=lastx && tedx<2);
		bool oky=(b!=y && a!=lasty && tedy<2);
		if (!okx && !oky) continue ;
		Z[sz++]=vec[i];
		if (okx){
			tedx++;
			lastx=b;
		}
		if (oky){
			tedy++;
			lasty=a;
		}
	}
	return Z;
}
void print(DATA X){
	for (int i=0; i<5 && X[i].first<INF; i++) cerr<<"{"<<X[i].first<<", ("<<X[i].second.first<<", "<<X[i].second.second<<")}  ";
	cerr<<"\n";
}
void Build(int id, int tl, int tr){
	if (tr-tl==1){
		seg[id]=F[X[tl]][X[tr]];
		return ;
	}
	int mid=(tl+tr)>>1;
	Build(id<<1, tl, mid);
	Build(id<<1 | 1, mid, tr);
	seg[id]=Merge(seg[id<<1], seg[id<<1 | 1]);
}
void Set(int id, int tl, int tr, int pos){
	if (pos<tl || tr<=pos) return ;
	if (tr-tl==1){
		seg[id]=F[X[tl]][X[tr]];
		return ;
	}
	int mid=(tl+tr)>>1;
	Set(id<<1, tl, mid, pos);
	Set(id<<1 | 1, mid, tr, pos);
	seg[id]=Merge(seg[id<<1], seg[id<<1 | 1]);
}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	cin>>n>>m>>T>>L;
	m<<=1;
//	assert(T==1); // 62 points
	for (int i=0; i<m; ){
		cin>>u>>v>>x;
		U[i]=u, V[i]=v, W[i]=x, G[u].pb(i++);
		U[i]=v, V[i]=u, W[i]=x, G[v].pb(i++);
	}
	memset(dist, 63, sizeof(dist));
	for (int i=0; i<m; i++){
		pq.push({dist[i][i]=0, i});
		while (pq.size()){
			int x=pq.top().second;
			pq.pop();
			if (mark[i][x]) continue ;
			mark[i][x]=1;
			for (int y:G[V[x]]) if (x^y^1 && dist[i][y]>dist[i][x]+W[y])
				pq.push({dist[i][y]=dist[i][x]+W[y], y});
		}
	}
	for (int i=0; i<5; i++) F[0][0][i]={INF, {-1, -1}};
	for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) F[i][j]=F[0][0];
	for (int u=1; u<=n; u++) for (int v=u+1; v<=n; v++){
		for (int i:G[u]) for (int j:G[v]) F[u][v][0]=min(F[u][v][0], {W[i]+dist[i][j^1], {i>>1, j>>1}});
		int a=F[u][v][0].second.first, b=F[u][v][0].second.second;
		for (int i:G[u]) for (int j:G[v]){
			if ((i>>1)!=a) F[u][v][1]=min(F[u][v][1], {W[i]+dist[i][j^1], {i>>1, j>>1}});
			if ((j>>1)!=b) F[u][v][2]=min(F[u][v][2], {W[i]+dist[i][j^1], {i>>1, j>>1}});
		}
		int c=F[u][v][1].second.first, d=F[u][v][1].second.second;
		int e=F[u][v][2].second.first, f=F[u][v][2].second.second;
		for (int i:G[u]) for (int j:G[v]){
			if ((i>>1)!=a && (j>>1)!=d) F[u][v][3]=min(F[u][v][3], {W[i]+dist[i][j^1], {i>>1, j>>1}});
			if ((i>>1)!=e && (j>>1)!=b) F[u][v][4]=min(F[u][v][4], {W[i]+dist[i][j^1], {i>>1, j>>1}});
		}
		for (int i=0; i<5; i++) F[v][u][i]={F[u][v][i].first, {F[u][v][i].second.second, F[u][v][i].second.first}};
	}
//	cerr<<"F[4][2]: ";print(F[4][2]);
//	cerr<<"F[2][4]: ";print(F[2][4]);
//	print(Merge(F[4][2], F[2][4]));
//	cerr<<"F[2][3]: ";print(F[2][3]);
	
	for (int i=1; i<=L; i++) cin>>X[i];
	Build(1, 1, L);
	while (T--){
		cin>>x>>y;
		X[x]=y;
		Set(1, 1, L, x-1);
		Set(1, 1, L, x);
		ll res=seg[1][0].first;
		if (res>=INF) res=-1;
		cout<<res<<"\n";
	}
	
	return 0;
}
/*
3 3 1 3
1 2 1
2 3 1
1 3 1
1
2
3
3 1


5 5 1 4
2 5 1
2 4 1
1 3 8
4 5 6
3 4 4
1 2 5 2
2 3

5 5 1 4
1 4 9
3 5 2
2 4 1
2 3 5
4 5 8
4 2 4 3
4 1

5 5 1 3
1 4 9
3 5 2
2 4 1
2 3 5
4 5 8
4 2 4
3 4

*/

Compilation message

wild_boar.cpp: In function 'DATA Merge(DATA, DATA)':
wild_boar.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |  for (int i=1; i<vec.size() && sz<5; i++){
      |                ~^~~~~~~~~~~
wild_boar.cpp: In function 'int main()':
wild_boar.cpp:124:7: warning: unused variable 'c' [-Wunused-variable]
  124 |   int c=F[u][v][1].second.first, d=F[u][v][1].second.second;
      |       ^
wild_boar.cpp:125:34: warning: unused variable 'f' [-Wunused-variable]
  125 |   int e=F[u][v][2].second.first, f=F[u][v][2].second.second;
      |                                  ^

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 126060 KB Output is correct
2 Correct 62 ms 126060 KB Output is correct
3 Correct 62 ms 126060 KB Output is correct
4 Correct 62 ms 126060 KB Output is correct
5 Correct 62 ms 126060 KB Output is correct
6 Correct 64 ms 126060 KB Output is correct
7 Correct 62 ms 126060 KB Output is correct
8 Correct 63 ms 126060 KB Output is correct
9 Correct 63 ms 126060 KB Output is correct
10 Correct 64 ms 126060 KB Output is correct
11 Correct 63 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 63 ms 126060 KB Output is correct
14 Correct 66 ms 126060 KB Output is correct
15 Correct 62 ms 126060 KB Output is correct
16 Correct 62 ms 126060 KB Output is correct
17 Correct 62 ms 126060 KB Output is correct
18 Correct 64 ms 126060 KB Output is correct
19 Correct 63 ms 126060 KB Output is correct
20 Correct 65 ms 126316 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 70 ms 126060 KB Output is correct
23 Correct 62 ms 126060 KB Output is correct
24 Correct 63 ms 126060 KB Output is correct
25 Correct 64 ms 126060 KB Output is correct

Subtask #2
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 126060 KB Output is correct
2 Correct 62 ms 126060 KB Output is correct
3 Correct 62 ms 126060 KB Output is correct
4 Correct 62 ms 126060 KB Output is correct
5 Correct 62 ms 126060 KB Output is correct
6 Correct 64 ms 126060 KB Output is correct
7 Correct 62 ms 126060 KB Output is correct
8 Correct 63 ms 126060 KB Output is correct
9 Correct 63 ms 126060 KB Output is correct
10 Correct 64 ms 126060 KB Output is correct
11 Correct 63 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 63 ms 126060 KB Output is correct
14 Correct 66 ms 126060 KB Output is correct
15 Correct 62 ms 126060 KB Output is correct
16 Correct 62 ms 126060 KB Output is correct
17 Correct 62 ms 126060 KB Output is correct
18 Correct 64 ms 126060 KB Output is correct
19 Correct 63 ms 126060 KB Output is correct
20 Correct 65 ms 126316 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 70 ms 126060 KB Output is correct
23 Correct 62 ms 126060 KB Output is correct
24 Correct 63 ms 126060 KB Output is correct
25 Correct 64 ms 126060 KB Output is correct
26 Correct 65 ms 126444 KB Output is correct
27 Correct 95 ms 148960 KB Output is correct
28 Correct 91 ms 148844 KB Output is correct
29 Correct 214 ms 150508 KB Output is correct
30 Correct 222 ms 150508 KB Output is correct
31 Correct 198 ms 150508 KB Output is correct
32 Correct 194 ms 150508 KB Output is correct
33 Correct 205 ms 151788 KB Output is correct
34 Correct 210 ms 151752 KB Output is correct
35 Correct 178 ms 151660 KB Output is correct
36 Correct 193 ms 151660 KB Output is correct
37 Correct 210 ms 151788 KB Output is correct
38 Correct 202 ms 153324 KB Output is correct
39 Correct 185 ms 153196 KB Output is correct
40 Correct 201 ms 153324 KB Output is correct
41 Correct 199 ms 153324 KB Output is correct
42 Correct 165 ms 154348 KB Output is correct
43 Correct 188 ms 155372 KB Output is correct
44 Correct 188 ms 155372 KB Output is correct
45 Correct 125 ms 157676 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 126060 KB Output is correct
2 Correct 62 ms 126060 KB Output is correct
3 Correct 62 ms 126060 KB Output is correct
4 Correct 62 ms 126060 KB Output is correct
5 Correct 62 ms 126060 KB Output is correct
6 Correct 64 ms 126060 KB Output is correct
7 Correct 62 ms 126060 KB Output is correct
8 Correct 63 ms 126060 KB Output is correct
9 Correct 63 ms 126060 KB Output is correct
10 Correct 64 ms 126060 KB Output is correct
11 Correct 63 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 63 ms 126060 KB Output is correct
14 Correct 66 ms 126060 KB Output is correct
15 Correct 62 ms 126060 KB Output is correct
16 Correct 62 ms 126060 KB Output is correct
17 Correct 62 ms 126060 KB Output is correct
18 Correct 64 ms 126060 KB Output is correct
19 Correct 63 ms 126060 KB Output is correct
20 Correct 65 ms 126316 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 70 ms 126060 KB Output is correct
23 Correct 62 ms 126060 KB Output is correct
24 Correct 63 ms 126060 KB Output is correct
25 Correct 64 ms 126060 KB Output is correct
26 Correct 65 ms 126444 KB Output is correct
27 Correct 95 ms 148960 KB Output is correct
28 Correct 91 ms 148844 KB Output is correct
29 Correct 214 ms 150508 KB Output is correct
30 Correct 222 ms 150508 KB Output is correct
31 Correct 198 ms 150508 KB Output is correct
32 Correct 194 ms 150508 KB Output is correct
33 Correct 205 ms 151788 KB Output is correct
34 Correct 210 ms 151752 KB Output is correct
35 Correct 178 ms 151660 KB Output is correct
36 Correct 193 ms 151660 KB Output is correct
37 Correct 210 ms 151788 KB Output is correct
38 Correct 202 ms 153324 KB Output is correct
39 Correct 185 ms 153196 KB Output is correct
40 Correct 201 ms 153324 KB Output is correct
41 Correct 199 ms 153324 KB Output is correct
42 Correct 165 ms 154348 KB Output is correct
43 Correct 188 ms 155372 KB Output is correct
44 Correct 188 ms 155372 KB Output is correct
45 Correct 125 ms 157676 KB Output is correct
46 Correct 241 ms 133996 KB Output is correct
47 Correct 4994 ms 184576 KB Output is correct
48 Correct 4467 ms 216636 KB Output is correct
49 Correct 3721 ms 245196 KB Output is correct
50 Correct 3947 ms 245316 KB Output is correct
51 Correct 4287 ms 245276 KB Output is correct
52 Correct 2996 ms 245404 KB Output is correct
53 Correct 3011 ms 245324 KB Output is correct
54 Correct 3018 ms 245376 KB Output is correct
55 Correct 2991 ms 245548 KB Output is correct
56 Correct 2989 ms 262532 KB Output is correct
57 Correct 2910 ms 280648 KB Output is correct
58 Correct 2864 ms 300524 KB Output is correct
59 Correct 2788 ms 322044 KB Output is correct
60 Correct 2747 ms 345124 KB Output is correct
61 Correct 2656 ms 369848 KB Output is correct
62 Correct 2555 ms 396252 KB Output is correct
63 Correct 2417 ms 423996 KB Output is correct
64 Correct 883 ms 476704 KB Output is correct
65 Correct 875 ms 476888 KB Output is correct

Subtask #4
38.0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 126060 KB Output is correct
2 Correct 62 ms 126060 KB Output is correct
3 Correct 62 ms 126060 KB Output is correct
4 Correct 62 ms 126060 KB Output is correct
5 Correct 62 ms 126060 KB Output is correct
6 Correct 64 ms 126060 KB Output is correct
7 Correct 62 ms 126060 KB Output is correct
8 Correct 63 ms 126060 KB Output is correct
9 Correct 63 ms 126060 KB Output is correct
10 Correct 64 ms 126060 KB Output is correct
11 Correct 63 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 63 ms 126060 KB Output is correct
14 Correct 66 ms 126060 KB Output is correct
15 Correct 62 ms 126060 KB Output is correct
16 Correct 62 ms 126060 KB Output is correct
17 Correct 62 ms 126060 KB Output is correct
18 Correct 64 ms 126060 KB Output is correct
19 Correct 63 ms 126060 KB Output is correct
20 Correct 65 ms 126316 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 70 ms 126060 KB Output is correct
23 Correct 62 ms 126060 KB Output is correct
24 Correct 63 ms 126060 KB Output is correct
25 Correct 64 ms 126060 KB Output is correct
26 Correct 65 ms 126444 KB Output is correct
27 Correct 95 ms 148960 KB Output is correct
28 Correct 91 ms 148844 KB Output is correct
29 Correct 214 ms 150508 KB Output is correct
30 Correct 222 ms 150508 KB Output is correct
31 Correct 198 ms 150508 KB Output is correct
32 Correct 194 ms 150508 KB Output is correct
33 Correct 205 ms 151788 KB Output is correct
34 Correct 210 ms 151752 KB Output is correct
35 Correct 178 ms 151660 KB Output is correct
36 Correct 193 ms 151660 KB Output is correct
37 Correct 210 ms 151788 KB Output is correct
38 Correct 202 ms 153324 KB Output is correct
39 Correct 185 ms 153196 KB Output is correct
40 Correct 201 ms 153324 KB Output is correct
41 Correct 199 ms 153324 KB Output is correct
42 Correct 165 ms 154348 KB Output is correct
43 Correct 188 ms 155372 KB Output is correct
44 Correct 188 ms 155372 KB Output is correct
45 Correct 125 ms 157676 KB Output is correct
46 Correct 241 ms 133996 KB Output is correct
47 Correct 4994 ms 184576 KB Output is correct
48 Correct 4467 ms 216636 KB Output is correct
49 Correct 3721 ms 245196 KB Output is correct
50 Correct 3947 ms 245316 KB Output is correct
51 Correct 4287 ms 245276 KB Output is correct
52 Correct 2996 ms 245404 KB Output is correct
53 Correct 3011 ms 245324 KB Output is correct
54 Correct 3018 ms 245376 KB Output is correct
55 Correct 2991 ms 245548 KB Output is correct
56 Correct 2989 ms 262532 KB Output is correct
57 Correct 2910 ms 280648 KB Output is correct
58 Correct 2864 ms 300524 KB Output is correct
59 Correct 2788 ms 322044 KB Output is correct
60 Correct 2747 ms 345124 KB Output is correct
61 Correct 2656 ms 369848 KB Output is correct
62 Correct 2555 ms 396252 KB Output is correct
63 Correct 2417 ms 423996 KB Output is correct
64 Correct 883 ms 476704 KB Output is correct
65 Correct 875 ms 476888 KB Output is correct
66 Correct 161 ms 147308 KB Output is correct
67 Correct 413 ms 216684 KB Output is correct
68 Correct 942 ms 455788 KB Output is correct
69 Correct 1089 ms 456044 KB Output is correct
70 Correct 1310 ms 477848 KB Output is correct
71 Correct 6813 ms 186972 KB Output is correct
72 Correct 6247 ms 218680 KB Output is correct
73 Correct 4562 ms 248348 KB Output is correct
74 Correct 4555 ms 248452 KB Output is correct
75 Correct 4569 ms 248236 KB Output is correct
76 Correct 5447 ms 248056 KB Output is correct
77 Correct 5906 ms 247776 KB Output is correct
78 Correct 6417 ms 247736 KB Output is correct
79 Correct 4418 ms 283552 KB Output is correct
80 Correct 4372 ms 303688 KB Output is correct
81 Correct 4785 ms 324760 KB Output is correct
82 Correct 4126 ms 348092 KB Output is correct
83 Correct 4481 ms 372304 KB Output is correct
84 Correct 3761 ms 426720 KB Output is correct
85 Correct 1641 ms 480112 KB Output is correct