| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1147168 | txni128 | CONSUL (info1cup19_consul) | C++20 | Compilation error | 0 ms | 0 KiB |
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
#define endl '\n'
void speed()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
void solve(int n)
{
random_device rgd();
mt19937 rng(rgd);
uniform_int_distribution <int> d(1,n);
for(int step = 1; step<=30; step++)
{
int i=d(rng);
int candidate = kth(i);
int br=cnt(candidate);
if(br>=n/3)
{
say_answer(candidate);
}
}
}
Compilation message (stderr)
consul.cpp: In function 'void solve(int)':
consul.cpp:13:22: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
13 | random_device rgd();
| ^~
consul.cpp:13:22: note: remove parentheses to default-initialize a variable
13 | random_device rgd();
| ^~
| --
consul.cpp:13:22: note: or replace parentheses with braces to value-initialize a variable
consul.cpp:14:20: error: no matching function for call to 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::mersenne_twister_engine(std::random_device (&)())'
14 | mt19937 rng(rgd);
| ^
In file included from /usr/include/c++/11/random:49,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
from consul.cpp:1:
/usr/include/c++/11/bits/random.h:541:9: note: candidate: 'template<class _Sseq, class> std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::mersenne_twister_engine(_Sseq&) [with _Sseq = _Sseq; <template-parameter-2-2> = <template-parameter-1-2>; _UIntType = long unsigned int; long unsigned int __w = 32; long unsigned int __n = 624; long unsigned int __m = 397; long unsigned int __r = 31; _UIntType __a = 2567483615; long unsigned int __u = 11; _UIntType __d = 4294967295; long unsigned int __s = 7; _UIntType __b = 2636928640; long unsigned int __t = 15; _UIntType __c = 4022730752; long unsigned int __l = 18; _UIntType __f = 1812433253]'
541 | mersenne_twister_engine(_Sseq& __q)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/random.h:541:9: note: template argument deduction/substitution failed:
/usr/include/c++/11/bits/random.h: In substitution of 'template<class _UIntType, long unsigned int __w, long unsigned int __n, long unsigned int __m, long unsigned int __r, _UIntType __a, long unsigned int __u, _UIntType __d, long unsigned int __s, _UIntType __b, long unsigned int __t, _UIntType __c, long unsigned int __l, _UIntType __f> template<class _Sseq> using _If_seed_seq = typename std::enable_if<std::__detail::__is_seed_seq<_Sseq, std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>, _UIntType>::value>::type [with _Sseq = std::random_device(); _UIntType = long unsigned int; long unsigned int __w = 32; long unsigned int __n = 624; long unsigned int __m = 397; long unsigned int __r = 31; _UIntType __a = 2567483615; long unsigned int __u = 11; _UIntType __d = 4294967295; long unsigned int __s = 7; _UIntType __b = 2636928640; long unsigned int __t = 15; _UIntType __c = 4022730752; long unsigned int __l = 18; _UIntType __f = 1812433253]':
/usr/include/c++/11/bits/random.h:539:32: required from here
/usr/include/c++/11/bits/random.h:502:15: error: request for member 'generate' in 'std::declval<std::random_device (&)()>()', which is of non-class type 'std::random_device()'
502 | using _If_seed_seq = typename enable_if<__detail::__is_seed_seq<
| ^~~~~~~~~~~~
/usr/include/c++/11/bits/random.h:530:7: note: candidate: 'std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::mersenne_twister_engine(std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::result_type) [with _UIntType = long unsigned int; long unsigned int __w = 32; long unsigned int __n = 624; long unsigned int __m = 397; long unsigned int __r = 31; _UIntType __a = 2567483615; long unsigned int __u = 11; _UIntType __d = 4294967295; long unsigned int __s = 7; _UIntType __b = 2636928640; long unsigned int __t = 15; _UIntType __c = 4022730752; long unsigned int __l = 18; _UIntType __f = 1812433253; std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::result_type = long unsigned int]' (near match)
530 | mersenne_twister_engine(result_type __sd)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/random.h:530:7: note: conversion of argument 1 would be ill-formed:
consul.cpp:14:17: error: invalid conversion from 'std::random_device (*)()' to 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::result_type' {aka 'long unsigned int'} [-fpermissive]
14 | mt19937 rng(rgd);
| ^~~
| |
| std::random_device (*)()
In file included from /usr/include/c++/11/random:49,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
from consul.cpp:1:
/usr/include/c++/11/bits/random.h:527:7: note: candidate: 'std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::mersenne_twister_engine() [with _UIntType = long unsigned int; long unsigned int __w = 32; long unsigned int __n = 624; long unsigned int __m = 397; long unsigned int __r = 31; _UIntType __a = 2567483615; long unsigned int __u = 11; _UIntType __d = 4294967295; long unsigned int __s = 7; _UIntType __b = 2636928640; long unsigned int __t = 15; _UIntType __c = 4022730752; long unsigned int __l = 18; _UIntType __f = 1812433253]'
527 | mersenne_twister_engine() : mersenne_twister_engine(default_seed) { }
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/random.h:527:7: note: candidate expects 0 arguments, 1 provided
/usr/include/c++/11/bits/random.h:472:11: note: candidate: 'constexpr std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::mersenne_twister_engine(const std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>&)'
472 | class mersenne_twister_engine
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/random.h:472:11: note: no known conversion for argument 1 from 'std::random_device()' to 'const std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>&'
/usr/include/c++/11/bits/random.h:472:11: note: candidate: 'constexpr std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::mersenne_twister_engine(std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>&&)'
/usr/include/c++/11/bits/random.h:472:11: note: no known conversion for argument 1 from 'std::random_device()' to 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>&&'