Submission #1049832

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1049832	2024-08-09T05:38:44 Z	nisanduu	Fountain Parks (IOI21_parks)	C++17	Compilation error	0 ms	0 KB

parks

#include "parks.h"
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;

class Disjoint{
    vector<int> parent,sz;
    public:
        Disjoint(int n){
            parent.resize(n+1);
            sz.resize(n+1,1);
            for(int i=0;i<n+1;i++) parent[i]=i;
        }
        int findPar(int node){
            if(parent[node]==node) return node;
            return parent[node] = findPar(parent[node]);
        }
        void uz(int node1,int node2){
            int p1 = findPar(node1);
            int p2 = findPar(node2);
            if(p1==p2) return;
            if(sz[p1]>sz[p2]){
                parent[p2]=parent[p1];
                sz[p1] += sz[p2];
            }else{
                parent[p1]=parent[p2];
                sz[p2] += sz[p1];
            }
        }
};


int construct_roads(std::vector<int> x, std::vector<int> y) {
    ll n = x.size();
    
    Disjoint ds(n+10);
    map<ll,map<ll,ll>> hash1;
    map<ll,pair<ll,ll>> hash2;
    map<ll,ll> picked;
    vector<pair<int,int>> arr(n);
    int crInd = 0;
    for(int i=0;i<n;i++){
        hash1[x[i]][y[i]]=crInd;
        hash2[crInd] = {x[i],y[i]};
    }
    vector<int> u, v, a, b;
    for(int i=0;i<n;i++){
        int crX = x[i];
        int crY = y[i];
        if(hash1[crX+2][crY]){
            if(ds.findPar(i)!=ds.findPar(hash1[crX+2][crY])){
                ds.uz(i,hash1[crX+2][crY]);
                u.push_back(i);
                v.push_back(hash1[crX+2][crY]);
            }
        }
        if(hash1[crX-2][crY]){
            if(ds.findPar(i)!=ds.findPar(hash1[crX-2][crY])){
                ds.uz(i,hash1[crX-2][crY]);
                u.push_back(i);
                v.push_back(hash1[crX-2][crY]);
            }
        }
        if(hash1[crX][crY+2]){
            if(ds.findPar(i)!=ds.findPar(hash1[crX][crY+2])){
                ds.uz(i,hash1[crX][crY+2]);
                u.push_back(i);
                v.push_back(hash1[crX][crY+2]);
            }
        }
        if(hash1[crX][crY-2]){
            if(ds.findPar(i)!=ds.findPar(hash1[crX][crY-2])){
                ds.uz(i,hash1[crX][crY-2]);
                u.push_back(i);
                v.push_back(hash1[crX][crY-2]);
            }
        }
    }
    set<int> p;
    for(int i=0;i<n;i++){
        p.insert(ds.findPar(i));
    }
    if(p.size()!=1){
        return 0;
    }
    map<ll,map<ll,ll>> oc;
    for(int i=0;i<n-1;i++){
        int crX = x[u[i]];
        int crY = y[u[i]];
        int nxX = x[v[i]];
        int nxY = y[v[i]];
        if(crX == nxX){
            ll bv = (crY + nxY)/2;
            if(oc[crX + 1][b]){
                a.push_back(crX - 1);
                b.push_back(bv);
                oc[crX - 1][bv] = 1;
            }else{
                a.push_back(crX + 1);
                b.push_back(bv);
                oc[crX + 1][bv] = 1;
            }
        }else{
            ll av = (crX + nxX) / 2;
            if(oc[a][crY + 1]){
                a.push_back(av);
                b.push_back(crY - 1);
                oc[av][crY - 1] = 1;
            }else{
                a.push_back(av);
                b.push_back(crY + 1);
                oc[av][crY + 1] = 1;
            }
        }
    }
    // bool f=1;
    // for(ll i=0;i<n-1;i++){
    //     if((arr[i+1].first - arr[i].first) != 2){
    //         return 0;
    //     }
    //     u.push_back(arr[i+1].second);
    //     v.push_back(arr[i].second);
    //     a.push_back(1);
    //     b.push_back((arr[i+1].first+arr[i].first)/2);
    // }
    build(u, v, a, b);
    return 1;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:95:27: error: no match for 'operator[]' (operand types are 'std::map<long long int, std::map<long long int, long long int> >::mapped_type' {aka 'std::map<long long int, long long int>'} and 'std::vector<int>')
   95 |             if(oc[crX + 1][b]){
      |                           ^
In file included from /usr/include/c++/10/map:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:81,
                 from parks.cpp:2:
/usr/include/c++/10/bits/stl_map.h:492:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = long long int; _Tp = long long int; _Compare = std::less<long long int>; _Alloc = std::allocator<std::pair<const long long int, long long int> >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = long long int; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = long long int]'
  492 |       operator[](const key_type& __k)
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_map.h:492:34: note:   no known conversion for argument 1 from 'std::vector<int>' to 'const key_type&' {aka 'const long long int&'}
  492 |       operator[](const key_type& __k)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_map.h:512:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](std::map<_Key, _Tp, _Compare, _Alloc>::key_type&&) [with _Key = long long int; _Tp = long long int; _Compare = std::less<long long int>; _Alloc = std::allocator<std::pair<const long long int, long long int> >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = long long int; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = long long int]'
  512 |       operator[](key_type&& __k)
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_map.h:512:29: note:   no known conversion for argument 1 from 'std::vector<int>' to 'std::map<long long int, long long int>::key_type&&' {aka 'long long int&&'}
  512 |       operator[](key_type&& __k)
      |                  ~~~~~~~~~~~^~~
parks.cpp:106:18: error: no match for 'operator[]' (operand types are 'std::map<long long int, std::map<long long int, long long int> >' and 'std::vector<int>')
  106 |             if(oc[a][crY + 1]){
      |                  ^
In file included from /usr/include/c++/10/map:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:81,
                 from parks.cpp:2:
/usr/include/c++/10/bits/stl_map.h:492:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = long long int; _Tp = std::map<long long int, long long int>; _Compare = std::less<long long int>; _Alloc = std::allocator<std::pair<const long long int, std::map<long long int, long long int> > >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = std::map<long long int, long long int>; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = long long int]'
  492 |       operator[](const key_type& __k)
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_map.h:492:34: note:   no known conversion for argument 1 from 'std::vector<int>' to 'const key_type&' {aka 'const long long int&'}
  492 |       operator[](const key_type& __k)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_map.h:512:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](std::map<_Key, _Tp, _Compare, _Alloc>::key_type&&) [with _Key = long long int; _Tp = std::map<long long int, long long int>; _Compare = std::less<long long int>; _Alloc = std::allocator<std::pair<const long long int, std::map<long long int, long long int> > >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = std::map<long long int, long long int>; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = long long int]'
  512 |       operator[](key_type&& __k)
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_map.h:512:29: note:   no known conversion for argument 1 from 'std::vector<int>' to 'std::map<long long int, std::map<long long int, long long int> >::key_type&&' {aka 'long long int&&'}
  512 |       operator[](key_type&& __k)
      |                  ~~~~~~~~~~~^~~