Submission #642431

#	Time	Username	Problem	Language	Result	Execution time	Memory
642431		lis05st	Stations (IOI20_stations)	C++17	0 / 100	1 ms	392 KiB

stations

#ifdef LIS05ST
    #define _GLIBCXX_DEBUG
    #define _GLIBCXX_DEBUG_PEDANTIC
#endif
//#pragma GCC optimize("O3")
//#pragma GCC target("avx2,popcnt,lzcnt,bmi,bmi2")
#include"bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef long double ld;

const int NMAX=1000;
vector<int>g[NMAX+5];
int p[NMAX+5];
int lbl[NMAX+5];
bool used[NMAX+5];

void dfs(int v,int l){
    lbl[v]=l;
    used[v]=1;
    for(auto u:g[v]){
        if(used[u])continue;
        dfs(u,l+1);
    }
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v){
    memset(used,0,sizeof used);
    memset(p,0,sizeof p);
    for(int i=0;i<n;i++)g[i].clear();
    for(int i=0;i<n-1;i++){
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
        p[v[i]]++;
        p[u[i]]++;
    }
    bool f=1;
    for(int i=0;i<n;i++){
        if(p[i]==1){
            f=0;
            dfs(i,0);
            break;
        }
    }
    //assert(f==0);
    vector<int>ans(n);
    for(int i=0;i<n;i++)ans[i]=lbl[i];
    for(auto e:ans)cout<<e<<" ";
    return ans;
};
int find_next_station(int s, int t, std::vector<int> c){
    for(auto u:c){
        if(s<=u&&u<=t)return u;
        if(t<=u&&u<=s)return u;
    }
};

#define MULTITESTS false
void solve(int testCase){

}


void precalc(){

}
/*
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    precalc();
    int t=1;
    if(MULTITESTS)cin>>t;
    for(int i=1;i<=t;i++){
        auto t1=clock();
        solve(i);
        auto t2=clock();
        float delta=t2-t1;
        delta/=CLOCKS_PER_SEC;
        #ifdef LIS05ST
        cout<<"("<<i<<")------------"<<fixed<<setprecision(2)<<delta<<"s\n";
        #endif
    }
}*/

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:38:10: warning: variable 'f' set but not used [-Wunused-but-set-variable]
   38 |     bool f=1;
      |          ^
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:57:1: warning: control reaches end of non-void function [-Wreturn-type]
   57 | };
      | ^

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