Submission #375375

#	Time	Username	Problem	Language	Result	Execution time	Memory
375375		Alex_tz307	Art Exhibition (JOI18_art)	C++17	Compilation error	0 ms	0 KiB

art

#include <bits/stdc++.h>

using namespace std;
using int64 = long long;

const int NMAX = 5e5 + 5;
int N, lg2[NMAX];
int64 pref_sum[NMAX], rmq_max[NMAX][20], ans;
pair<int64,int> a[NMAX];

void compute_lg2() {
    lg2[1] = 0;
    for(int i = 2; i <= N; ++i)
        lg2[i] = lg2[i >> 1] + 1;
}

void compute_rmq() {
    for(int i = 1; i <= N; ++i)
        rmq_max[i][0] = pref_sum[i] - a[i].first;
    for(int j = 1; (1 << j) <= N; ++j)
        for(int i = 1; i + (1 << j) - 1 <= N; ++i)
            rmq_max[i][j] = max(rmq_max[i][j - 1], rmq_max[i + (1 << (j - 1))][j - 1]);
}

int query_max(int l, int r) {
    int k = lg2[r - l + 1];
    int dif = (r - l + 1) - (1 << k);
    return max(rmq_max[l][k], rmq_max[l + dif][k]);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> N;
    for(int i = 1; i <= N; ++i)
        cin >> a[i].first >> a[i].second;
    sort(a + 1, a + N + 1);
    for(int i = 1; i <= N; ++i)
        pref_sum[i] = pref_sum[i - 1] + a[i].second;
    compute_lg2();
    compute_rmq();
    for(int i = 1; i <= N; ++i) {
        int best = a[i].first + query_max(i, N) - pref_sum[i - 1];
        ans = max(ans, best);
    }
    cout << ans << '\n';
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:45:28: error: no matching function for call to 'max(int64&, int&)'
   45 |         ans = max(ans, best);
      |                            ^
In file included from /usr/include/c++/9/bits/specfun.h:45,
                 from /usr/include/c++/9/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:41,
                 from art.cpp:1:
/usr/include/c++/9/bits/stl_algobase.h:222:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  222 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/9/bits/stl_algobase.h:222:5: note:   template argument deduction/substitution failed:
art.cpp:45:28: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   45 |         ans = max(ans, best);
      |                            ^
In file included from /usr/include/c++/9/bits/specfun.h:45,
                 from /usr/include/c++/9/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:41,
                 from art.cpp:1:
/usr/include/c++/9/bits/stl_algobase.h:268:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  268 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/9/bits/stl_algobase.h:268:5: note:   template argument deduction/substitution failed:
art.cpp:45:28: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   45 |         ans = max(ans, best);
      |                            ^
In file included from /usr/include/c++/9/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
                 from art.cpp:1:
/usr/include/c++/9/bits/stl_algo.h:3456:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3456 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/9/bits/stl_algo.h:3456:5: note:   template argument deduction/substitution failed:
art.cpp:45:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   45 |         ans = max(ans, best);
      |                            ^
In file included from /usr/include/c++/9/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
                 from art.cpp:1:
/usr/include/c++/9/bits/stl_algo.h:3462:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3462 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/9/bits/stl_algo.h:3462:5: note:   template argument deduction/substitution failed:
art.cpp:45:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   45 |         ans = max(ans, best);
      |                            ^