Submission #889188

#	Time	Username	Problem	Language	Result	Execution time	Memory
889188		Onown	Factories (JOI14_factories)	C++17	Compilation error	0 ms	0 KiB

factories

#include <bits/stdc++.h>
#include <factories.h>
using namespace std;

const int N = 5e5 + 55, L = 2e0 + 20, Q = 7e2 + 72;
const long long I = 1e18 + 118;
int n, q, h[N], par[N][L];
long long spt[N][L], dis[N];
vector<pair<int, int>> adj[N];

void dfs(int v, int p) {
	for (auto [u, w]: adj[v])
		if (u != p) {
			par[u][0] = v;
			spt[u][0] = w;
			h[u] = h[v] + 1;
			dfs(u, v);
		}
}

long long distance(int v, int u) {
	long long ans = 0;
	if (h[v] < h[u]) swap(v, u);
	for (int i = 0; i < L; i++)
		if ((1 << i) & (h[v] - h[u])) {
			ans += spt[v][i];
			v = par[v][i];
		}
	if (v == u) return ans;

	for (int i = L - 1; i >= 0; i--)
		if (par[v][i] != par[u][i]) {
			ans += spt[v][i] + spt[u][i];
			v = par[v][i];
			u = par[u][i];
		}
	return ans + spt[v][0] + spt[u][0];
}

void Init(int N, int A[], int B[], int D[]) {
	n = N;
	for (int i = 0; i < n - 1; i++) {
		adj[A[i] + 1].push_back({B[i] + 1, D[i]});
		adj[B[i] + 1].push_back({A[i] + 1, D[i]});
	}

	dfs(1, 0);
	for (int i = 1; i < L; i++)
		for (int j = 1; j <= n; j++) {
			par[j][i] = par[par[j][i - 1]][i - 1];
			spt[j][i] = spt[j][i - 1] + spt[par[j][i - 1]][i - 1];
		}
	for (int i = 0; i < N; dis[i++] = I);
}

long long Query(int S, int X[], int T, int Y[]) {
	if (S < Q) {
		long long ans = I;
		for (int i = 0; i < T; i++)
			for (int j = 0; j < S; j++)
				ans = min(ans, distance(Y[i] + 1, X[j] + 1));
		return ans;
	}
	
	priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> pq;
	for (int i = 0; i < S; i++) {
		dis[X[i] + 1] = 0;
		pq.push({0, X[i] + 1});
	}
	while (!pq.empty()) {
		long long d = pq.top().first;
		int v = pq.top().second;
		pq.pop();
		
		if (dis[v] < d) 
		continue;

		for (auto [u, w]: adj[v])
			if (dis[u] > d + w) {
				dis[u] = d + w;
				pq.push({d + w, u});
			}
	}

	int ans = I;
	for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
	for (int i = 0; i < N; dis[i++] = I);
	return ans;
}

Compilation message (stderr)

factories.cpp: In function 'long long int Query(int, int*, int, int*)':
factories.cpp:85:12: warning: overflow in conversion from 'long long int' to 'int' changes value from '1000000000000000128' to '-1486618496' [-Woverflow]
   85 |  int ans = I;
      |            ^
factories.cpp:86:58: error: no matching function for call to 'min(int&, long long int&)'
   86 |  for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
      |                                                          ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from factories.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:230:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  230 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:230:5: note:   template argument deduction/substitution failed:
factories.cpp:86:58: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   86 |  for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
      |                                                          ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from factories.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:278:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  278 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:278:5: note:   template argument deduction/substitution failed:
factories.cpp:86:58: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   86 |  for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
      |                                                          ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from factories.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3468:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(std::initializer_list<_Tp>)'
 3468 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3468:5: note:   template argument deduction/substitution failed:
factories.cpp:86:58: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   86 |  for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
      |                                                          ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from factories.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3474:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare)'
 3474 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3474:5: note:   template argument deduction/substitution failed:
factories.cpp:86:58: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   86 |  for (int i = 0; i < T; i++) ans = min(ans, dis[Y[i] + 1]);
      |                                                          ^