oj.uz

Submission #346416

# Submission time Handle Problem Language Result Execution time Memory
346416 2021-01-09T15:44:14 Z alishahali1382 Wild Boar (JOI18_wild_boar) C++14
47 / 100
 4981 ms 456568 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=10000000000000010LL;
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];
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){
			Z[sz++]=vec[i];
			tedx++;
			lastx=b;
		}
		else if (oky){
			Z[sz++]=vec[i];
			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";
}

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[1][2]: ";print(F[1][2]);
//	cerr<<"F[1][3]: ";print(F[1][3]);
//	cerr<<"F[2][3]: ";print(F[2][3]);
	
	for (int i=1; i<=L; i++) cin>>X[i];
	while (T--){
		cin>>x>>y;
		X[x]=y;
		DATA ans=F[X[1]][X[2]];
		for (int i=3; i<=L; i++) ans=Merge(ans, F[X[i-1]][X[i]]);
		ll res=ans[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

*/

Compilation message

wild_boar.cpp: In function 'DATA Merge(DATA, DATA)':
wild_boar.cpp:47:17: 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]
   47 |  for (int i=1; i<vec.size() && sz<5; i++){
      |                ~^~~~~~~~~~~
wild_boar.cpp: In function 'int main()':
wild_boar.cpp:102:7: warning: unused variable 'c' [-Wunused-variable]
  102 |   int c=F[u][v][1].second.first, d=F[u][v][1].second.second;
      |       ^
wild_boar.cpp:103:34: warning: unused variable 'f' [-Wunused-variable]
  103 |   int e=F[u][v][2].second.first, f=F[u][v][2].second.second;
      |                                  ^

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 126060 KB Output is correct
2 Correct 63 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 63 ms 126060 KB Output is correct
7 Correct 64 ms 126060 KB Output is correct
8 Correct 64 ms 126060 KB Output is correct
9 Correct 62 ms 126188 KB Output is correct
10 Correct 64 ms 126188 KB Output is correct
11 Correct 62 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 71 ms 126060 KB Output is correct
14 Correct 64 ms 126060 KB Output is correct
15 Correct 64 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 63 ms 126060 KB Output is correct
19 Correct 62 ms 126060 KB Output is correct
20 Correct 64 ms 126060 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 62 ms 126084 KB Output is correct
23 Correct 61 ms 126060 KB Output is correct
24 Correct 62 ms 126060 KB Output is correct
25 Correct 63 ms 126060 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 126060 KB Output is correct
2 Correct 63 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 63 ms 126060 KB Output is correct
7 Correct 64 ms 126060 KB Output is correct
8 Correct 64 ms 126060 KB Output is correct
9 Correct 62 ms 126188 KB Output is correct
10 Correct 64 ms 126188 KB Output is correct
11 Correct 62 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 71 ms 126060 KB Output is correct
14 Correct 64 ms 126060 KB Output is correct
15 Correct 64 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 63 ms 126060 KB Output is correct
19 Correct 62 ms 126060 KB Output is correct
20 Correct 64 ms 126060 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 62 ms 126084 KB Output is correct
23 Correct 61 ms 126060 KB Output is correct
24 Correct 62 ms 126060 KB Output is correct
25 Correct 63 ms 126060 KB Output is correct
26 Correct 63 ms 126444 KB Output is correct
27 Correct 80 ms 128620 KB Output is correct
28 Correct 79 ms 128620 KB Output is correct
29 Correct 201 ms 130284 KB Output is correct
30 Correct 204 ms 130188 KB Output is correct
31 Correct 183 ms 130156 KB Output is correct
32 Correct 190 ms 130156 KB Output is correct
33 Correct 194 ms 131692 KB Output is correct
34 Correct 194 ms 131564 KB Output is correct
35 Correct 165 ms 131308 KB Output is correct
36 Correct 180 ms 131436 KB Output is correct
37 Correct 195 ms 131436 KB Output is correct
38 Correct 182 ms 133100 KB Output is correct
39 Correct 186 ms 133100 KB Output is correct
40 Correct 185 ms 133100 KB Output is correct
41 Correct 182 ms 133100 KB Output is correct
42 Correct 164 ms 133996 KB Output is correct
43 Correct 170 ms 135020 KB Output is correct
44 Correct 172 ms 135020 KB Output is correct
45 Correct 112 ms 137452 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 126060 KB Output is correct
2 Correct 63 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 63 ms 126060 KB Output is correct
7 Correct 64 ms 126060 KB Output is correct
8 Correct 64 ms 126060 KB Output is correct
9 Correct 62 ms 126188 KB Output is correct
10 Correct 64 ms 126188 KB Output is correct
11 Correct 62 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 71 ms 126060 KB Output is correct
14 Correct 64 ms 126060 KB Output is correct
15 Correct 64 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 63 ms 126060 KB Output is correct
19 Correct 62 ms 126060 KB Output is correct
20 Correct 64 ms 126060 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 62 ms 126084 KB Output is correct
23 Correct 61 ms 126060 KB Output is correct
24 Correct 62 ms 126060 KB Output is correct
25 Correct 63 ms 126060 KB Output is correct
26 Correct 63 ms 126444 KB Output is correct
27 Correct 80 ms 128620 KB Output is correct
28 Correct 79 ms 128620 KB Output is correct
29 Correct 201 ms 130284 KB Output is correct
30 Correct 204 ms 130188 KB Output is correct
31 Correct 183 ms 130156 KB Output is correct
32 Correct 190 ms 130156 KB Output is correct
33 Correct 194 ms 131692 KB Output is correct
34 Correct 194 ms 131564 KB Output is correct
35 Correct 165 ms 131308 KB Output is correct
36 Correct 180 ms 131436 KB Output is correct
37 Correct 195 ms 131436 KB Output is correct
38 Correct 182 ms 133100 KB Output is correct
39 Correct 186 ms 133100 KB Output is correct
40 Correct 185 ms 133100 KB Output is correct
41 Correct 182 ms 133100 KB Output is correct
42 Correct 164 ms 133996 KB Output is correct
43 Correct 170 ms 135020 KB Output is correct
44 Correct 172 ms 135020 KB Output is correct
45 Correct 112 ms 137452 KB Output is correct
46 Correct 240 ms 133996 KB Output is correct
47 Correct 4981 ms 164376 KB Output is correct
48 Correct 4521 ms 196004 KB Output is correct
49 Correct 3697 ms 225024 KB Output is correct
50 Correct 3933 ms 225068 KB Output is correct
51 Correct 4228 ms 225016 KB Output is correct
52 Correct 2987 ms 225260 KB Output is correct
53 Correct 2992 ms 225136 KB Output is correct
54 Correct 3032 ms 225392 KB Output is correct
55 Correct 3008 ms 225260 KB Output is correct
56 Correct 2988 ms 242028 KB Output is correct
57 Correct 2931 ms 260332 KB Output is correct
58 Correct 2853 ms 280428 KB Output is correct
59 Correct 2779 ms 301844 KB Output is correct
60 Correct 2698 ms 324940 KB Output is correct
61 Correct 2633 ms 349692 KB Output is correct
62 Correct 2528 ms 375904 KB Output is correct
63 Correct 2387 ms 403632 KB Output is correct
64 Incorrect 855 ms 456568 KB Output isn't correct
65 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 126060 KB Output is correct
2 Correct 63 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 63 ms 126060 KB Output is correct
7 Correct 64 ms 126060 KB Output is correct
8 Correct 64 ms 126060 KB Output is correct
9 Correct 62 ms 126188 KB Output is correct
10 Correct 64 ms 126188 KB Output is correct
11 Correct 62 ms 126060 KB Output is correct
12 Correct 63 ms 126060 KB Output is correct
13 Correct 71 ms 126060 KB Output is correct
14 Correct 64 ms 126060 KB Output is correct
15 Correct 64 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 63 ms 126060 KB Output is correct
19 Correct 62 ms 126060 KB Output is correct
20 Correct 64 ms 126060 KB Output is correct
21 Correct 62 ms 126060 KB Output is correct
22 Correct 62 ms 126084 KB Output is correct
23 Correct 61 ms 126060 KB Output is correct
24 Correct 62 ms 126060 KB Output is correct
25 Correct 63 ms 126060 KB Output is correct
26 Correct 63 ms 126444 KB Output is correct
27 Correct 80 ms 128620 KB Output is correct
28 Correct 79 ms 128620 KB Output is correct
29 Correct 201 ms 130284 KB Output is correct
30 Correct 204 ms 130188 KB Output is correct
31 Correct 183 ms 130156 KB Output is correct
32 Correct 190 ms 130156 KB Output is correct
33 Correct 194 ms 131692 KB Output is correct
34 Correct 194 ms 131564 KB Output is correct
35 Correct 165 ms 131308 KB Output is correct
36 Correct 180 ms 131436 KB Output is correct
37 Correct 195 ms 131436 KB Output is correct
38 Correct 182 ms 133100 KB Output is correct
39 Correct 186 ms 133100 KB Output is correct
40 Correct 185 ms 133100 KB Output is correct
41 Correct 182 ms 133100 KB Output is correct
42 Correct 164 ms 133996 KB Output is correct
43 Correct 170 ms 135020 KB Output is correct
44 Correct 172 ms 135020 KB Output is correct
45 Correct 112 ms 137452 KB Output is correct
46 Correct 240 ms 133996 KB Output is correct
47 Correct 4981 ms 164376 KB Output is correct
48 Correct 4521 ms 196004 KB Output is correct
49 Correct 3697 ms 225024 KB Output is correct
50 Correct 3933 ms 225068 KB Output is correct
51 Correct 4228 ms 225016 KB Output is correct
52 Correct 2987 ms 225260 KB Output is correct
53 Correct 2992 ms 225136 KB Output is correct
54 Correct 3032 ms 225392 KB Output is correct
55 Correct 3008 ms 225260 KB Output is correct
56 Correct 2988 ms 242028 KB Output is correct
57 Correct 2931 ms 260332 KB Output is correct
58 Correct 2853 ms 280428 KB Output is correct
59 Correct 2779 ms 301844 KB Output is correct
60 Correct 2698 ms 324940 KB Output is correct
61 Correct 2633 ms 349692 KB Output is correct
62 Correct 2528 ms 375904 KB Output is correct
63 Correct 2387 ms 403632 KB Output is correct
64 Incorrect 855 ms 456568 KB Output isn't correct
65 Halted 0 ms 0 KB -