Submission #1308925

#	Time	Username	Problem	Language	Result	Execution time	Memory
1308925		duongquanghai08	Stations (IOI20_stations)	C++20	Compilation error	0 ms	0 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1003;
vector<int> adj[N];
int in[N], timer = 0;
void dfs(int u, int par) {
    in[u] = ++timer;
    for(auto v : adj[u]) {
        if(v == par) continue;
        dfs(v, u);
    }
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    for(int i = 0; i < n; i++) adj[i].clear();
    timer = 0;
    for(int i = 0; i < n - 1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    dfs(0, -1);
    vector<int> b;
    for(int i = 0; i < n; i++) b.push_back(in[i]);
    return b;
}

int find_next_station(int s, int t, vector<int> c) {
    sort(c.begin(), c.end());
	if(s > t) return c[0];
    else {
        int ans = 0;
        for(int i = c.size() - 1; i >= 0; i--) if(x < t) ans = x;
        if(ans == 0) return c[0];
        return ans;
    }
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:32:51: error: 'x' was not declared in this scope
   32 |         for(int i = c.size() - 1; i >= 0; i--) if(x < t) ans = x;
      |                                                   ^