Submission #760036

#TimeUsernameProblemLanguageResultExecution timeMemory
7600368e7Cyberland (APIO23_cyberland)C++17
20 / 100
401 ms10316 KiB
    #include "cyberland.h"
    //Challenge: Accepted
    #include <bits/stdc++.h>
    using namespace std;
    #ifdef zisk
    void debug(){cout << endl;}
    template<class T, class ... U> void debug(T a, U ...b){cout << a << " ", debug(b...);}
    template<class T> void pary(T l, T r) {
    	while (l != r) cout << *l << " ", l++;
    	cout << endl;
    }
    #else
    #define debug(...) 0
    #define pary(...) 0
    #endif
    #define ll long long
    #define ld double
    #define maxn 100005
    #define ff first
    #define ss second
    #define pii pair<ll, ll>
    const ld inf = 1e15;
    const ld eps = 1e-10;
    vector<pii> adj[maxn];
    int type[maxn];
    ld d[maxn], d2[maxn];
    void dijkstra(int n) {
    	priority_queue<pair<ld, int> , vector<pair<ld, int> >, greater<pair<ld, int> > > pq;
    	for (int i = 0;i < n;i++) {
    		d2[i] = d[i];
    		pq.push(make_pair(d[i], i));
    	}
    	while (pq.size()) {
    		auto [dis, cur] = pq.top();pq.pop();
    		if (abs(dis - d[cur]) > eps) continue;
    		for (auto [v, w]:adj[cur]) {
    			if (type[v] == 0 && d[v] > 0) {
    				d[v] = 0;
    				pq.push(make_pair(0, v));
    			}
    			if (d[cur] + w < d[v]) {
    				d[v] = d[cur]+w;
    				pq.push(make_pair(d[v], v));
    			}
    			if (type[v] == 2 && (d[cur] + w) / 2 < d2[v]) {
    				d2[v] = (d[cur] + w) / 2;
    			}
    		}
    	}
    	pary(d, d + n);
    	pary(d2, d2+n);
    }
    double solve(int N, int M, int K, int H, vector<int> U, vector<int> V, vector<int> W, vector<int> arr) {
    	for (int i = 0;i < N;i++) {
    		adj[i].clear();
    		d[i] = d2[i] = inf;
    		type[i] = arr[i];
    	}
    	for (int i = 0;i < M;i++) {
    		if (U[i] == H) swap(U[i], V[i]);	
    		adj[U[i]].push_back({V[i], W[i]});
    		if (V[i] != H) adj[V[i]].push_back({U[i], W[i]});
    	}
    	d[0] = d2[0] = 0;
    	for (int i = 0;i <= min(K, 100);i++) {
    		dijkstra(N);
    		if (i < K) {
    			for (int j = 0;j < N;j++) {
    				d[j] = min(d[j], d2[j]);
    			}
    		}
    	}	
    	if (d[H] == inf) {
    		return -1;
    	}
    	return d[H];
    }

Compilation message (stderr)

cyberland.cpp: In function 'void dijkstra(int)':
cyberland.cpp:14:23: warning: statement has no effect [-Wunused-value]
   14 |     #define pary(...) 0
      |                       ^
cyberland.cpp:50:6: note: in expansion of macro 'pary'
   50 |      pary(d, d + n);
      |      ^~~~
cyberland.cpp:14:23: warning: statement has no effect [-Wunused-value]
   14 |     #define pary(...) 0
      |                       ^
cyberland.cpp:51:6: note: in expansion of macro 'pary'
   51 |      pary(d2, d2+n);
      |      ^~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...