Submission #415335

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
415335	2021-05-31 22:10:15	ja_kingy	Road Closures (APIO21_roads)	C++14	100 / 100	385 ms	40076 KiB

roads

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#include "roads.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pii;
const int mxN = 1e5;
ll sm, par[mxN], is_root[mxN], dp[mxN][2], done[mxN], par_cost[mxN];
list<int> order;
vector<pii> adj[mxN];
vector<ll> ans;
struct dp_val {
    ll v, dp0, dp1;
    bool operator < (dp_val b) const {
        ll da = dp1 - dp0, db = b.dp1 - b.dp0;
        if (da != db) return da > db;
        return v < b.v;
    }
};
set<dp_val> bestk[mxN], extra[mxN];
void dfs(int u, int p, int pc) {
    par[u] = p;
    par_cost[u] = pc;
    for (pii v: adj[u]) if (v.first != p) {
        dfs(v.first, u, v.second);
    }
    order.push_back(u);
 
 
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Compilation message (stderr)

roads.cpp: In function 'void check_k(int, int)':
roads.cpp:34:25: warning: comparison of integer expressions of different signedness: 'std::set<dp_val>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |     if (bestk[u].size() < k && extra[u].size()) {
      |         ~~~~~~~~~~~~~~~~^~~
roads.cpp:41:25: warning: comparison of integer expressions of different signedness: 'std::set<dp_val>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   41 |     if (bestk[u].size() > k) {
      |         ~~~~~~~~~~~~~~~~^~~
roads.cpp: In function 'std::vector<long long int> minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)':
roads.cpp:104:31: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  104 |             if (adj[u].size() == k) {
      |                 ~~~~~~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 14 / 14
• Subtask 4: 10 / 10
• Subtask 5: 17 / 17
• Subtask 6: 25 / 25
• Subtask 7: 22 / 22