Submission #673944

#	Time	Username	Problem	Language	Result	Execution time	Memory
673944		vjudge1	Stations (IOI20_stations)	C++17	0 / 100	2 ms	556 KiB

stations

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const long long mod = 1988;
const long long mxN = 2e5 + 1;

vector<int> label(int n,int k, vector<int> u, vector<int> v){
    vector<vector<int>>gr;
    gr.resize(int(u.size()));
    for(int i = 0;i < int(u.size());i++){
        gr[v[i]].push_back(u[i]);
        gr[u[i]].push_back(v[i]);
    }
    vector<int>labels(2001);
    function<void(int,int,int)> dfs = [&](int node,int par,int val){
        val++;
        labels[node] = val;
        for(auto child : gr[node]){
            if(child != par) dfs(child,node,val);
        }
    };
    dfs(0,-1,0);
    return labels;
}
int find_next_station(int s, int t, vector<int> c){
    int ans = 0;
    for(int i = 0;i < c.size();i++){
        if(c[i] < s && t < s){
            ans = c[i];
            return c[i];
        }
        if(c[i] <= t){
            ans = c[i];
        }else return ans;
    }
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:27:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0;i < c.size();i++){
      |                   ~~^~~~~~~~~~
stations.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type]
   36 | }
      | ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61