Submission #610967

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
610967	2022-07-28 20:17:51	penguinhacker	Robot (JOI21_ho_t4)	C++17	34 / 100	3051 ms	50096 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
const int mxN=1e5;
const ll INF=1e18;
int n, m;
ll dp1[mxN]; // no change of edges leading to this node
vector<ll> dp2[mxN]; // changed the edge leading into this node
vector<ar<int, 4>> adj[mxN];
map<int, ll> mp[mxN];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> m;
  for (int i=0; i<m; ++i) {
    int u, v, c, w;
    cin >> u >> v >> c >> w, --u, --v;
    int s1=adj[u].size(), s2=adj[v].size();
    adj[u].push_back({v, c, w, s2});
    adj[v].push_back({u, c, w, s1});
    mp[u][c]+=w;
    mp[v][c]+=w;
  }
  if (adj[n-1].empty()) {
    cout << -1;
    return 0;
 
 
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Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:43:12: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   43 |   if (t==-1&&d^dp1[u]||~t&&d^dp2[u][t])
      |       ~~~~~^~~~~~~~~~

• Subtask 1: 34 / 34
• Subtask 2: 0 / 24
• Subtask 3: 0 / 42