Submission #1055620

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055620		LeaRouse	Split the Attractions (IOI19_split)	C++14	Compilation error	0 ms	0 KiB

split

#include <bits/stdc++.h>
#include "split.h"
#define fastio ios_base::sync_with_stdio(0); cin.tie(0);
#define ll long long
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const int MAX=1e5+5;
const int MOD=1e8+7;
int R[MAX];
int A[MAX];
int B[MAX];
map<string,int>m;
vector<int>v;
bool vis[MAX];
int cont=0;

void dfs(int u){
    A[cont]=u;
    cont++;
    vis[u]=true;
    for(auto it:v[u]){
        if(vis[it]) continue;
        dfs(it);
    }
}
 
vector<int> find_split(int N, int a, int b, int c, vector<int> p, vector<int> q) {
    int m=p.size();
    for(int i=0;i<m;i++){
        v[p[i]].push_back(q[i]);
        v[q[i]].push_back(p[i]);
        B[p[i]]++;
        B[q[i]]++;
    }
 
    bool awa=false;
    for(int i=0;i<N;i++){
        if(B[i]==1){
            dfs(i);
            awa=true;
            break;
        }
    }
    if(!awa) dfs(0);
    
    vector<int>ans(n);
    for(int i=0;i<a;i++){
        ans[A[i]]=1;
    }
    for(int i=a;i<a+b;i++){
        ans[A[i]]=2;
    }
    for(int i=a+b;i<a+b+c;i++){
        ans[A[i]]=3;
    }
 
    return ans;
}

Compilation message (stderr)

split.cpp: In function 'void dfs(int)':
split.cpp:23:20: error: 'begin' was not declared in this scope; did you mean 'std::begin'?
   23 |     for(auto it:v[u]){
      |                    ^
      |                    std::begin
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from split.cpp:1:
/usr/include/c++/10/valarray:1224:5: note: 'std::begin' declared here
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
split.cpp:23:20: error: 'end' was not declared in this scope; did you mean 'std::end'?
   23 |     for(auto it:v[u]){
      |                    ^
      |                    std::end
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from split.cpp:1:
/usr/include/c++/10/valarray:1244:5: note: 'std::end' declared here
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:32:17: error: request for member 'push_back' in 'v.std::vector<int>::operator[](((std::vector<int>::size_type)p.std::vector<int>::operator[](((std::vector<int>::size_type)i))))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   32 |         v[p[i]].push_back(q[i]);
      |                 ^~~~~~~~~
split.cpp:33:17: error: request for member 'push_back' in 'v.std::vector<int>::operator[](((std::vector<int>::size_type)q.std::vector<int>::operator[](((std::vector<int>::size_type)i))))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   33 |         v[q[i]].push_back(p[i]);
      |                 ^~~~~~~~~
split.cpp:48:20: error: 'n' was not declared in this scope
   48 |     vector<int>ans(n);
      |                    ^