Submission #895820

#	Time	Username	Problem	Language	Result	Execution time	Memory
895820		tvladm2009	Exam (eJOI20_exam)	C++17	Compilation error	0 ms	0 KiB

exam

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n + 1), b(n + 1), r(n + 1);
    map<int, int> pos;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        pos[a[i]] = i;
    }
    for (int i = 1; i <= n; ++i) {
        cin >> b[i];
    }
    for (int i = n; i >= 1; --i) {
        r[i] = pos[b[i]];
    }
    vector<int> dp(n + 1, 0);
    for (int i = n; i >= 1; --i) {
        if (r[i] == 0) {
            dp[i] = dp[i + 1];
            continue;
        }
        int ans = 0;
        for (int j = i; j <= r[i]; ++j) ans += b[j] == b[i];
        dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
    }
    cout << dp[1] << endl;
    return 0;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:32:65: error: no matching function for call to 'max(bool, __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type)'
   32 |         dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
      |                                                                 ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from exam.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:
exam.cpp:32:65: note:   deduced conflicting types for parameter 'const _Tp' ('bool' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
   32 |         dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
      |                                                                 ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from exam.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:
exam.cpp:32:65: note:   deduced conflicting types for parameter 'const _Tp' ('bool' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
   32 |         dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
      |                                                                 ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from exam.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:
exam.cpp:32:65: note:   mismatched types 'std::initializer_list<_Tp>' and 'bool'
   32 |         dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
      |                                                                 ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from exam.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:
exam.cpp:32:65: note:   mismatched types 'std::initializer_list<_Tp>' and 'bool'
   32 |         dp[i] = max(dp[i + 1] + a[i] == b[i], dp[r[i] + 1] + ans);
      |                                                                 ^