oj.uz

Submission #288655

# Submission time Handle Problem Language Result Execution time Memory
288655 2020-09-01T17:48:00 Z Blagojce Wild Boar (JOI18_wild_boar) C++11
47 / 100
 1533 ms 257016 KB 
#include <bits/stdc++.h> 
#define fr(i, n, m) for(int i = (n); i < (m); i ++)
#define pb push_back
#define st first
#define nd second
#define pq priority_queue
#define all(x) begin(x), end(x)
#include <time.h>
#include <cmath>
 
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
 
const int i_inf = 1e9;
const ll inf = 1e18;
const ll mod = 1000000007;
const ld eps = 1e-13;
const ld pi  = 3.14159265359;
 
mt19937 _rand(time(NULL));
clock_t timer = clock();
const int mxn = 2003;
 
const ll A = 911382323;
const ll B = 972663749;

int n, m, t, len;
int a[200000];
vector<int> g[mxn];

int l[mxn], r[mxn], w[mxn];




ll dist[2][mxn][2][mxn];
bool vis[2][mxn][2][mxn];


void dijkstra(int edge, int side){
	pq<pair<ll, pii> > Q;
	Q.push({0, {edge, side}});
	dist[side][edge][side][edge] = 0;
	while(!Q.empty()){
		int e = Q.top().nd.st;
		int s = Q.top().nd.nd;
		Q.pop();
		if(vis[side][edge][s][e]) continue;
		vis[side][edge][s][e] = true;
		
		int node = l[e];
		if(s == 1) node = r[e];
		
		for(auto edge2 : g[node]){
			if(edge2 == e || edge2>=m) continue;
			int side2 = 0;
			if(l[edge2] == node) side2 = 1;
			
			if(dist[side][edge][s][e] + w[edge2] < dist[side][edge][side2][edge2]){
				dist[side][edge][side2][edge2] = dist[side][edge][s][e] + w[edge2];
				Q.push({-dist[side][edge][side2][edge2], {edge2, side2}});
			}
		}
	}
}
	
void prec(){
	fr(i, 0, 2) fr(j, 0, n+m) fr(k, 0, 2)fr(p, 0, n+m) dist[i][j][k][p] = inf;
	fr(i, 0, n){
		for(auto edge : g[i]){
			int side = 0;
			if(r[edge] == i) side = 1;
			dijkstra(edge, side);
		}
	}
}


void solve(){
	cin >> n >> m >> t >> len;
	fr(i, 0, m){
		cin >> l[i] >> r[i] >> w[i];
		--l[i], --r[i];
		g[l[i]].pb(i);
		g[r[i]].pb(i);
	}
	fr(i, 0, n){
		l[i+m] = r[i+m] = i;
		g[i].pb(i+m);
	}
	fr(i, 0, len){
		cin >> a[i];
		--a[i];
	}
	
	prec();
	
	fr(I, 0, t){
		int p, q;
		cin >> p >> q;
		a[p-1] = q-1;
		
		pq<pair<ll, pii> > Q;
		Q.push({0, {a[0]+m, 1}});
		fr(i, 1, len){
			vector<pair<ll,pii> > v;
			while(!Q.empty()){
				ll w = Q.top().st;
				int side = Q.top().nd.nd;
				int edge = Q.top().nd.st;
				Q.pop();
				for(auto e : g[a[i]]){
					if(e >= m) continue;
					
					int s = 0;
					if(a[i] == r[e]) s = 1;

					
					v.pb({w + dist[side][edge][s][e], {e, s}});				
				}
			}
			sort(all(v));
			fr(i, 0, (int)v.size()){
				Q.push({v[i].st,{v[i].nd.st, v[i].nd.nd}});
				int ed = v[i].nd.st;
				while(i + 1 < (int)v.size() && v[i+1].nd.st == ed) i ++;
			}
			
			while(Q.size()>2){
				Q.pop();
			}
		}
		while(Q.size()>1) Q.pop();
		ll ans = Q.top().st;
		if(ans >= inf) ans = -1;
		cout<<ans<<endl;
	}
}


int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int tc = 1;
	//cin >> tc;
	while(tc--) solve();
}
/*
5 10 1 10
1 2 8
1 3 5
1 4 2
1 5 1
2 3 7
2 4 9
2 5 6
3 4 10
3 5 10
4 5 6
4
2
4
3
5
3
1
4
3
5
3 5
*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 768 KB Output is correct
3 Correct 1 ms 768 KB Output is correct
4 Correct 1 ms 768 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 1 ms 768 KB Output is correct
7 Correct 1 ms 768 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 1 ms 768 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 768 KB Output is correct
22 Correct 1 ms 768 KB Output is correct
23 Correct 1 ms 768 KB Output is correct
24 Correct 1 ms 768 KB Output is correct
25 Correct 1 ms 768 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 768 KB Output is correct
3 Correct 1 ms 768 KB Output is correct
4 Correct 1 ms 768 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 1 ms 768 KB Output is correct
7 Correct 1 ms 768 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 1 ms 768 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 768 KB Output is correct
22 Correct 1 ms 768 KB Output is correct
23 Correct 1 ms 768 KB Output is correct
24 Correct 1 ms 768 KB Output is correct
25 Correct 1 ms 768 KB Output is correct
26 Correct 3 ms 1920 KB Output is correct
27 Correct 44 ms 6784 KB Output is correct
28 Correct 41 ms 6784 KB Output is correct
29 Correct 207 ms 15352 KB Output is correct
30 Correct 541 ms 15352 KB Output is correct
31 Correct 1477 ms 15280 KB Output is correct
32 Correct 1533 ms 15352 KB Output is correct
33 Correct 165 ms 17656 KB Output is correct
34 Correct 164 ms 17656 KB Output is correct
35 Correct 1297 ms 17656 KB Output is correct
36 Correct 1016 ms 17532 KB Output is correct
37 Correct 178 ms 17656 KB Output is correct
38 Correct 144 ms 20216 KB Output is correct
39 Correct 718 ms 20256 KB Output is correct
40 Correct 151 ms 20216 KB Output is correct
41 Correct 149 ms 20224 KB Output is correct
42 Correct 623 ms 21752 KB Output is correct
43 Correct 155 ms 22904 KB Output is correct
44 Correct 133 ms 22776 KB Output is correct
45 Correct 88 ms 25592 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 768 KB Output is correct
3 Correct 1 ms 768 KB Output is correct
4 Correct 1 ms 768 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 1 ms 768 KB Output is correct
7 Correct 1 ms 768 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 1 ms 768 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 768 KB Output is correct
22 Correct 1 ms 768 KB Output is correct
23 Correct 1 ms 768 KB Output is correct
24 Correct 1 ms 768 KB Output is correct
25 Correct 1 ms 768 KB Output is correct
26 Correct 3 ms 1920 KB Output is correct
27 Correct 44 ms 6784 KB Output is correct
28 Correct 41 ms 6784 KB Output is correct
29 Correct 207 ms 15352 KB Output is correct
30 Correct 541 ms 15352 KB Output is correct
31 Correct 1477 ms 15280 KB Output is correct
32 Correct 1533 ms 15352 KB Output is correct
33 Correct 165 ms 17656 KB Output is correct
34 Correct 164 ms 17656 KB Output is correct
35 Correct 1297 ms 17656 KB Output is correct
36 Correct 1016 ms 17532 KB Output is correct
37 Correct 178 ms 17656 KB Output is correct
38 Correct 144 ms 20216 KB Output is correct
39 Correct 718 ms 20256 KB Output is correct
40 Correct 151 ms 20216 KB Output is correct
41 Correct 149 ms 20224 KB Output is correct
42 Correct 623 ms 21752 KB Output is correct
43 Correct 155 ms 22904 KB Output is correct
44 Correct 133 ms 22776 KB Output is correct
45 Correct 88 ms 25592 KB Output is correct
46 Correct 253 ms 31668 KB Output is correct
47 Runtime error 248 ms 257016 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 768 KB Output is correct
3 Correct 1 ms 768 KB Output is correct
4 Correct 1 ms 768 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 1 ms 768 KB Output is correct
7 Correct 1 ms 768 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 1 ms 768 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 768 KB Output is correct
22 Correct 1 ms 768 KB Output is correct
23 Correct 1 ms 768 KB Output is correct
24 Correct 1 ms 768 KB Output is correct
25 Correct 1 ms 768 KB Output is correct
26 Correct 3 ms 1920 KB Output is correct
27 Correct 44 ms 6784 KB Output is correct
28 Correct 41 ms 6784 KB Output is correct
29 Correct 207 ms 15352 KB Output is correct
30 Correct 541 ms 15352 KB Output is correct
31 Correct 1477 ms 15280 KB Output is correct
32 Correct 1533 ms 15352 KB Output is correct
33 Correct 165 ms 17656 KB Output is correct
34 Correct 164 ms 17656 KB Output is correct
35 Correct 1297 ms 17656 KB Output is correct
36 Correct 1016 ms 17532 KB Output is correct
37 Correct 178 ms 17656 KB Output is correct
38 Correct 144 ms 20216 KB Output is correct
39 Correct 718 ms 20256 KB Output is correct
40 Correct 151 ms 20216 KB Output is correct
41 Correct 149 ms 20224 KB Output is correct
42 Correct 623 ms 21752 KB Output is correct
43 Correct 155 ms 22904 KB Output is correct
44 Correct 133 ms 22776 KB Output is correct
45 Correct 88 ms 25592 KB Output is correct
46 Correct 253 ms 31668 KB Output is correct
47 Runtime error 248 ms 257016 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -