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답안 #288277

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
288277 2020-09-01T11:22:05 Z Blagojce Wild Boar (JOI18_wild_boar) C++11
47 / 100
 16366 ms 1048576 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,ll> 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 = 2e5+5;
 
const ll A = 911382323;
const ll B = 972663749;

int n, m, t, len;

ll dist[2][501][100000];
bool vis[2][501][100000];

void solve(){
	cin >> n >> m >> t >> len;
	vector<pii> g[n];
	int l[m+1], r[m+1];
	fr(i, 0, m){
		int u, v, w;
		cin >> u >> v >> w;
		--u, --v;
		l[i+1] = u, r[i+1] = v;
		g[u].pb({i+1, w});
		g[v].pb({i+1, w});
	}
	int a[len];
	fr(i, 0, len){
		cin >> a[i];
		--a[i];
	}
	
	fr(I, 0, t){
		int p, q;
		cin >> p >> q;
		a[p-1] = q-1;
		
		l[0] = r[0] = a[0];
		
		memset(vis, false, sizeof(vis));
		
		fr(i, 0, 2) fr(j, 0, m+1) fr(k, 0, len) dist[i][j][k] = inf;
		
		
		pq<pair<ll, pair<int,pii> > > Q;
		Q.push({0, {0, {0, 0}}});
		dist[0][0][0] = 0;
		
		while(!Q.empty()){
			int side = Q.top().nd.st;
			int edge = Q.top().nd.nd.st;
			int k = Q.top().nd.nd.nd;
			
			Q.pop();
			if(vis[side][edge][k]) continue;
			vis[side][edge][k] = true;
			
			int u;
			if(side == 0){
				u = l[edge];
			}
			else{
				u = r[edge];
			}
			
			for(auto e : g[u]){
				if(e.st == edge) continue;
				
				int newside, newnode;
				if(u == l[e.st]){
					newnode = r[e.st];
					newside = 1;
				}
				else{
					newnode = l[e.st];
					newside = 0;
				}
				
				int newk = k;
				if(newnode == a[k+1]){
					newk += 1;
				}
				
				if(dist[side][edge][k] + e.nd < dist[newside][e.st][newk]){
					dist[newside][e.st][newk] = dist[side][edge][k] + e.nd;
					Q.push({-dist[newside][e.st][newk], {newside,{e.st, newk}}});
				}
				
				
			}
		}
		ll ans = inf;
		
		for(auto u : g[a[len-1]]){
			int side;
			if(a[len-1] == l[u.st]) side = 0;
			else side = 1;
			ans = min(ans, dist[side][u.st][len-1]);
		}
		if(ans == inf)cout<<-1<<endl;
		else 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

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 98424 KB Output is correct
2 Correct 57 ms 98552 KB Output is correct
3 Correct 64 ms 98552 KB Output is correct
4 Correct 57 ms 98608 KB Output is correct
5 Correct 57 ms 98552 KB Output is correct
6 Correct 57 ms 98552 KB Output is correct
7 Correct 58 ms 98556 KB Output is correct
8 Correct 58 ms 98552 KB Output is correct
9 Correct 62 ms 98680 KB Output is correct
10 Correct 57 ms 98552 KB Output is correct
11 Correct 58 ms 98552 KB Output is correct
12 Correct 57 ms 98532 KB Output is correct
13 Correct 58 ms 98552 KB Output is correct
14 Correct 58 ms 98552 KB Output is correct
15 Correct 58 ms 98552 KB Output is correct
16 Correct 57 ms 98552 KB Output is correct
17 Correct 57 ms 98552 KB Output is correct
18 Correct 58 ms 98552 KB Output is correct
19 Correct 58 ms 98552 KB Output is correct
20 Correct 56 ms 98552 KB Output is correct
21 Correct 57 ms 98552 KB Output is correct
22 Correct 57 ms 98552 KB Output is correct
23 Correct 57 ms 98552 KB Output is correct
24 Correct 58 ms 98552 KB Output is correct
25 Correct 59 ms 98552 KB Output is correct

Subtask #2
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 98424 KB Output is correct
2 Correct 57 ms 98552 KB Output is correct
3 Correct 64 ms 98552 KB Output is correct
4 Correct 57 ms 98608 KB Output is correct
5 Correct 57 ms 98552 KB Output is correct
6 Correct 57 ms 98552 KB Output is correct
7 Correct 58 ms 98556 KB Output is correct
8 Correct 58 ms 98552 KB Output is correct
9 Correct 62 ms 98680 KB Output is correct
10 Correct 57 ms 98552 KB Output is correct
11 Correct 58 ms 98552 KB Output is correct
12 Correct 57 ms 98532 KB Output is correct
13 Correct 58 ms 98552 KB Output is correct
14 Correct 58 ms 98552 KB Output is correct
15 Correct 58 ms 98552 KB Output is correct
16 Correct 57 ms 98552 KB Output is correct
17 Correct 57 ms 98552 KB Output is correct
18 Correct 58 ms 98552 KB Output is correct
19 Correct 58 ms 98552 KB Output is correct
20 Correct 56 ms 98552 KB Output is correct
21 Correct 57 ms 98552 KB Output is correct
22 Correct 57 ms 98552 KB Output is correct
23 Correct 57 ms 98552 KB Output is correct
24 Correct 58 ms 98552 KB Output is correct
25 Correct 59 ms 98552 KB Output is correct
26 Correct 60 ms 98936 KB Output is correct
27 Correct 159 ms 257272 KB Output is correct
28 Correct 160 ms 257272 KB Output is correct
29 Correct 12813 ms 570488 KB Output is correct
30 Correct 14120 ms 570616 KB Output is correct
31 Correct 15290 ms 570496 KB Output is correct
32 Correct 16366 ms 570744 KB Output is correct
33 Correct 12188 ms 570580 KB Output is correct
34 Correct 12258 ms 570480 KB Output is correct
35 Correct 13035 ms 570408 KB Output is correct
36 Correct 13110 ms 570356 KB Output is correct
37 Correct 12070 ms 570488 KB Output is correct
38 Correct 11683 ms 570592 KB Output is correct
39 Correct 11622 ms 570352 KB Output is correct
40 Correct 11391 ms 570488 KB Output is correct
41 Correct 11413 ms 570596 KB Output is correct
42 Correct 10484 ms 570324 KB Output is correct
43 Correct 10423 ms 570552 KB Output is correct
44 Correct 10688 ms 570488 KB Output is correct
45 Correct 3959 ms 570460 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 98424 KB Output is correct
2 Correct 57 ms 98552 KB Output is correct
3 Correct 64 ms 98552 KB Output is correct
4 Correct 57 ms 98608 KB Output is correct
5 Correct 57 ms 98552 KB Output is correct
6 Correct 57 ms 98552 KB Output is correct
7 Correct 58 ms 98556 KB Output is correct
8 Correct 58 ms 98552 KB Output is correct
9 Correct 62 ms 98680 KB Output is correct
10 Correct 57 ms 98552 KB Output is correct
11 Correct 58 ms 98552 KB Output is correct
12 Correct 57 ms 98532 KB Output is correct
13 Correct 58 ms 98552 KB Output is correct
14 Correct 58 ms 98552 KB Output is correct
15 Correct 58 ms 98552 KB Output is correct
16 Correct 57 ms 98552 KB Output is correct
17 Correct 57 ms 98552 KB Output is correct
18 Correct 58 ms 98552 KB Output is correct
19 Correct 58 ms 98552 KB Output is correct
20 Correct 56 ms 98552 KB Output is correct
21 Correct 57 ms 98552 KB Output is correct
22 Correct 57 ms 98552 KB Output is correct
23 Correct 57 ms 98552 KB Output is correct
24 Correct 58 ms 98552 KB Output is correct
25 Correct 59 ms 98552 KB Output is correct
26 Correct 60 ms 98936 KB Output is correct
27 Correct 159 ms 257272 KB Output is correct
28 Correct 160 ms 257272 KB Output is correct
29 Correct 12813 ms 570488 KB Output is correct
30 Correct 14120 ms 570616 KB Output is correct
31 Correct 15290 ms 570496 KB Output is correct
32 Correct 16366 ms 570744 KB Output is correct
33 Correct 12188 ms 570580 KB Output is correct
34 Correct 12258 ms 570480 KB Output is correct
35 Correct 13035 ms 570408 KB Output is correct
36 Correct 13110 ms 570356 KB Output is correct
37 Correct 12070 ms 570488 KB Output is correct
38 Correct 11683 ms 570592 KB Output is correct
39 Correct 11622 ms 570352 KB Output is correct
40 Correct 11391 ms 570488 KB Output is correct
41 Correct 11413 ms 570596 KB Output is correct
42 Correct 10484 ms 570324 KB Output is correct
43 Correct 10423 ms 570552 KB Output is correct
44 Correct 10688 ms 570488 KB Output is correct
45 Correct 3959 ms 570460 KB Output is correct
46 Correct 82 ms 104312 KB Output is correct
47 Runtime error 1303 ms 1048576 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 98424 KB Output is correct
2 Correct 57 ms 98552 KB Output is correct
3 Correct 64 ms 98552 KB Output is correct
4 Correct 57 ms 98608 KB Output is correct
5 Correct 57 ms 98552 KB Output is correct
6 Correct 57 ms 98552 KB Output is correct
7 Correct 58 ms 98556 KB Output is correct
8 Correct 58 ms 98552 KB Output is correct
9 Correct 62 ms 98680 KB Output is correct
10 Correct 57 ms 98552 KB Output is correct
11 Correct 58 ms 98552 KB Output is correct
12 Correct 57 ms 98532 KB Output is correct
13 Correct 58 ms 98552 KB Output is correct
14 Correct 58 ms 98552 KB Output is correct
15 Correct 58 ms 98552 KB Output is correct
16 Correct 57 ms 98552 KB Output is correct
17 Correct 57 ms 98552 KB Output is correct
18 Correct 58 ms 98552 KB Output is correct
19 Correct 58 ms 98552 KB Output is correct
20 Correct 56 ms 98552 KB Output is correct
21 Correct 57 ms 98552 KB Output is correct
22 Correct 57 ms 98552 KB Output is correct
23 Correct 57 ms 98552 KB Output is correct
24 Correct 58 ms 98552 KB Output is correct
25 Correct 59 ms 98552 KB Output is correct
26 Correct 60 ms 98936 KB Output is correct
27 Correct 159 ms 257272 KB Output is correct
28 Correct 160 ms 257272 KB Output is correct
29 Correct 12813 ms 570488 KB Output is correct
30 Correct 14120 ms 570616 KB Output is correct
31 Correct 15290 ms 570496 KB Output is correct
32 Correct 16366 ms 570744 KB Output is correct
33 Correct 12188 ms 570580 KB Output is correct
34 Correct 12258 ms 570480 KB Output is correct
35 Correct 13035 ms 570408 KB Output is correct
36 Correct 13110 ms 570356 KB Output is correct
37 Correct 12070 ms 570488 KB Output is correct
38 Correct 11683 ms 570592 KB Output is correct
39 Correct 11622 ms 570352 KB Output is correct
40 Correct 11391 ms 570488 KB Output is correct
41 Correct 11413 ms 570596 KB Output is correct
42 Correct 10484 ms 570324 KB Output is correct
43 Correct 10423 ms 570552 KB Output is correct
44 Correct 10688 ms 570488 KB Output is correct
45 Correct 3959 ms 570460 KB Output is correct
46 Correct 82 ms 104312 KB Output is correct
47 Runtime error 1303 ms 1048576 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -