Submission #1261408

#	Time	Username	Problem	Language	Result	Execution time	Memory
1261408		shiori_chan	Watching (JOI13_watching)	C++20	Compilation error	0 ms	0 KiB

watching

#include <iostream>
#include <vector>
#include <random>
#include <algorithm>
#include <chrono>
#include <cstring>
#define all(x) x.begin(), x.end()
#define pb push_back
#define fi first
#define se second
#define compact(v) v.erase(unique(all(v)) , v.end())
#define pi pair<int , int>
#define vi vector<int>
#define eb emplace_back
#define FOR(i , l , r) for(int i = l; i <= r; ++ i)
#define FORD(i , l , r) for(int i = l; i >= r; -- i)

using namespace std;
typedef long long ll;
#define int long long

const int nd = 2e3 + 1;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution<int> dist(1 , (int)2e9);

vector <int> a(nd , 0);
int n , p , q; 

int dp[nd][nd];

bool calc(int w){
    dp[0][0] = 0;
    memset(dp , 0 , sizeof(dp));

    FOR(i , 0 , p){
        FOR(j , 0 , q){
            if(i){
                int far = dp[i - 1][j];
                auto it = upper_bound(a.begin() , a.begin() + 1 + n , a[far + 1] + w - 1);
                dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
            }
            if(j){
                int far = dp[i][j - 1]; 
                auto it = upper_bound(a.begin() , a.begin() + 1 + n , a[far + 1] + 2 * w - 1);
                dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
                
            }
        }
    }

    return (dp[p][q] >= n);
}

void solve(){
    cin >> n >> p >> q;
    p = min(p , n) , q = min(q , n);
    FOR(i , 1 , n) cin >> a[i];
    sort(a.begin() + 1 , a.begin() + 1 + n);

    int top = 1e9 , dow = 1 , res = 1e9;
    while(top >= dow){
        int mid = (top + dow) >> 1;
        if(calc(mid)) res = min(res , mid) , top = mid - 1;
        else dow = mid + 1;
    }

    cout << res;
}

signed main() {
   ios_base::sync_with_stdio(false);
   cin.tie(0);

    #define task "panh" 
    if(fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    solve();

    return 0;
}
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                                                                                                                                  */

Compilation message (stderr)

watching.cpp: In function 'bool calc(long long int)':
watching.cpp:40:31: error: no matching function for call to 'max(long long int&, __gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type)'
   40 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/ios:40,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/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++/11/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
watching.cpp:40:31: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type' {aka 'long int'})
   40 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/ios:40,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/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++/11/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
watching.cpp:40:31: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type' {aka 'long int'})
   40 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3461:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3461 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3461:5: note:   template argument deduction/substitution failed:
watching.cpp:40:31: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   40 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3467:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3467 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3467:5: note:   template argument deduction/substitution failed:
watching.cpp:40:31: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   40 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
watching.cpp:45:31: error: no matching function for call to 'max(long long int&, __gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type)'
   45 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/ios:40,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/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++/11/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
watching.cpp:45:31: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type' {aka 'long int'})
   45 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/ios:40,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/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++/11/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
watching.cpp:45:31: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type' {aka 'long int'})
   45 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3461:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3461 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3461:5: note:   template argument deduction/substitution failed:
watching.cpp:45:31: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   45 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from watching.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3467:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3467 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3467:5: note:   template argument deduction/substitution failed:
watching.cpp:45:31: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   45 |                 dp[i][j] = max(dp[i][j] , it - a.begin() - 1);
      |                            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
watching.cpp: In function 'int main()':
watching.cpp:76:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
watching.cpp:77:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~