Submission #597317

#	Time	Username	Problem	Language	Result	Execution time	Memory
597317		ThegeekKnight16	Arboras (RMI20_arboras)	C++14	Compilation error	0 ms	0 KiB

arboras

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
const int MAXN = 1e5 + 10;
vector<int> grafo[MAXN];
vector<ll> pesos[MAXN]; 
int indices[MAXN];
int pai[MAXN];
ll dp[MAXN][2]; 
int filho[MAXN][2];
ll modulo = 1e9 + 7;
 
void dfs(int v)
{
    dp[v][0] = 0LL; dp[v][1] = 0LL; 
    filho[v][0] = -1; filho[v][1] = -1;
    
    for (int i = 0; i < grafo[v].size(); i++)
    {
        int viz = grafo[v][i];
        ll p = pesos[v][i];
        dfs(viz);
        if (dp[viz][0] + p >= dp[v][0])
        {
            dp[v][1] = dp[v][0];
            dp[v][0] = (dp[viz][0] + p);
            filho[v][1] = filho[v][0];
            filho[v][0] = viz;
        }
        else if (dp[viz][0] + p >= dp[v][1]) 
        {
            dp[v][1] = (dp[viz][0] + p);
            filho[v][1] = viz;
        }
    }
}
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N;
    cin >> N;
    for (int i = 1; i < N; i++)
    {
        cin >> pai[i];
        grafo[pai[i]].push_back(i);
    }
    for (int i = 1; i < N; i++)
    {
        ll p;
        cin >> p;
        pesos[pai[i]].push_back(p);
        indices[i] = pesos[pai[i]].size()-1;
    }
    int Q;
    cin >> Q;
    dfs(0);
    ll resp = 0;
    for (int i = 0; i < N; i++) {resp += (dp[i][0] + dp[i][1]) % (modulo); resp = resp % modulo;}
    cout << resp;
    for (int q = 1; q <= Q; q++)
    {
        int v;
        ll add;
        cin >> v >> add;
        pesos[pai[v]][indices[v]] += add;
        
        while (v != 0)
        {
            ll p = pesos[pai[v]][indices[v]];
            /*cerr << "Estou no " << v << " com add " << add << '\n';*/
            //if (dp[v][0] + p <= dp[pai[v]][1]) {/*cerr << "Nao era grande ent quebrei" << '\n';*/ break;}
            if (v == filho[pai[v]][0])
            {
                /*cerr << "Eu era o filho 0";*/
                if (dp[pai[v]][0] == dp[v][0] + p) {/*cerr << "mas n mudei nada" << '\n';*/ break;}
                /*cerr << '\n';*/
              	resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
              	resp = resp % modulo;
                dp[pai[v]][0] = max(dp[pai[v]][0], dp[v][0] + p);
                //resp += (add) % modulo;
                //resp = resp % modulo;
            }
            else if (v == filho[pai[v]][1])
            {
                /*cerr << "Eu era o filho 1";*/
                //if (dp[pai[v]][1] == dp[v][0] + p) {/*cerr << "mas n mudei nada" << '\n';*/ break;}
              	resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
              	resp = resp % modulo;
                dp[pai[v]][1] = max(dp[pai[v]][1], dp[v][0] + p);
                //resp += (add) % modulo;
                //resp = resp % modulo;
                if (dp[pai[v]][1] > dp[pai[v]][0])
                {
                    /*cerr << " e agr virei 0";*/
                    swap(filho[pai[v]][0], filho[pai[v]][1]);
                    swap(dp[pai[v]][1], dp[pai[v]][0]);
                }
                /*cerr << '\n';*/
            }
            else
            {
                /*cerr << "Eu n era filho, por isso aumentou em " << ((dp[v][0] + p) - dp[pai[v]][1]) << '\n';*/
                //resp += ((dp[v][0] + p) - dp[pai[v]][1]) % modulo;
                //resp = resp % modulo;
              	resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
              	resp = resp % modulo;
                if (dp[v][0] + p >= dp[pai[v]][0])
                {
                    dp[pai[v]][1] = dp[pai[v]][0];
                    dp[pai[v]][0] = (dp[v][0] + p);
                    filho[pai[v]][1] = filho[pai[v]][0];
                    filho[pai[v]][0] = v;
                }
                else if (dp[v][0] + p >= dp[pai[v]][1]) 
                {
                  dp[pai[v]][1] = (dp[v][0] + p);
                  filho[pai[v]][1] = v;
                }
            }
            v = pai[v];
        }
        cout << '\n' << resp;
    }
}

Compilation message (stderr)

arboras.cpp: In function 'void dfs(int)':
arboras.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0; i < grafo[v].size(); i++)
      |                     ~~^~~~~~~~~~~~~~~~~
arboras.cpp: In function 'int main()':
arboras.cpp:79:61: error: no matching function for call to 'max(int, ll)'
   79 |                resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
arboras.cpp:79:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   79 |                resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
arboras.cpp:79:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   79 |                resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
arboras.cpp:79:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   79 |                resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
arboras.cpp:79:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   79 |                resp += max(0, dp[pai[v]][0] - (dp[v][0] + p));
      |                                                             ^
arboras.cpp:89:61: error: no matching function for call to 'max(int, ll)'
   89 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
arboras.cpp:89:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   89 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
arboras.cpp:89:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   89 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
arboras.cpp:89:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   89 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
arboras.cpp:89:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   89 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
arboras.cpp:107:61: error: no matching function for call to 'max(int, ll)'
  107 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
arboras.cpp:107:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
  107 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
arboras.cpp:107:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
  107 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
arboras.cpp:107:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
  107 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from arboras.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
arboras.cpp:107:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
  107 |                resp += max(0, dp[pai[v]][1] - (dp[v][0] + p));
      |                                                             ^