Submission #384982

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
384982	2021-04-02 19:39:42	dolphingarlic	Torrent (COI16_torrent)	C++14	100 / 100	150 ms	33896 KiB

torrent

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int n, a, b, dp[300001];
vector<int> graph[300001], chain, chain_cdp[300001];
bool on_chain[300001], good[300001];
bool find_chain(int node = a, int parent = 0) {
    if (node == b) {
        chain.push_back(node);
        on_chain[node] = true;
        return true;
    }
    for (int i : graph[node]) if (i != parent && find_chain(i, node)) {
        chain.push_back(node);
        on_chain[node] = true;
        return true;
    }
    return false;
}
void calc_dp(int node, int parent = 0) {
    vector<int> cdp;
    for (int i : graph[node]) if (i != parent && !on_chain[i]) {
        calc_dp(i, node);
        cdp.push_back(dp[i]);
    }
    sort(cdp.begin(), cdp.end(), greater<int>());
    for (int i = 0; i < cdp.size(); i++) {
 
 
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Compilation message (stderr)

torrent.cpp: In function 'void calc_dp(int, int)':
torrent.cpp:30:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = 0; i < cdp.size(); i++) {
      |                     ~~^~~~~~~~~~~~
torrent.cpp: In function 'bool check(int)':
torrent.cpp:48:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             for (delta = 0; delta < chain_cdp[i].size(); delta++) {
      |                             ~~~~~~^~~~~~~~~~~~~~~~~~~~~
torrent.cpp:43:14: warning: unused variable '_' [-Wunused-variable]
   43 |     for (int _ : {0, 1}) {
      |              ^

• Subtask 1: 31 / 31
• Subtask 2: 69 / 69