| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1032475 | aymanrs | Chameleon's Love (JOI20_chameleon) | C++14 | Compilation error | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
char samecol(int i, vector<int> g[], int j){
if(i==j) return 1;
for(int k : g[i]){
int r = samecol(k, g, j);
if(r) return -r;
}
return 0;
}
void Solve(int N) {
random_device rd;
mt19937 rng(rd);
bool v[2*N+1] = {false};
int d[2*N+1] = {0};
vector<int> g[2*N+1];
auto adde = [&g](int a, int b) -> void {
g[a].push_back(b);
g[b].push_back(a);
};
for(int i = 1;i <= N;i++){
int l = N+1, r = 2*N, m;
while(l<r){
m = l+r>>1;
vector<int> s;for(int j = l;j <= m;j++) s.push_back(j);
int te = Query(s);
s.push_back(i);
if(Query(s) == te){
r = m;
} else l=m+1;
}
Answer(i,l);
}
}
Compilation message (stderr)
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:15:17: 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&)'
15 | mt19937 rng(rd);
| ^
In file included from /usr/include/c++/10/random:49,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:108,
from chameleon.cpp:2:
/usr/include/c++/10/bits/random.h:532:9: 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]'
532 | mersenne_twister_engine(_Sseq& __q)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/random.h:532:9: note: template argument deduction/substitution failed:
/usr/include/c++/10/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++/10/bits/random.h:530:32: required from here
/usr/include/c++/10/bits/random.h:493:8: error: 'class std::random_device' has no member named 'generate'
493 | using _If_seed_seq = typename enable_if<__detail::__is_seed_seq<
| ^~~~~~~~~~~~
/usr/include/c++/10/bits/random.h:521:7: 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]'
521 | mersenne_twister_engine(result_type __sd)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/random.h:521:43: 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>::result_type' {aka 'long unsigned int'}
521 | mersenne_twister_engine(result_type __sd)
| ~~~~~~~~~~~~^~~~
/usr/include/c++/10/bits/random.h:518:7: 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]'
518 | mersenne_twister_engine() : mersenne_twister_engine(default_seed) { }
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/random.h:518:7: note: candidate expects 0 arguments, 1 provided
/usr/include/c++/10/bits/random.h:463:11: 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>&)'
463 | class mersenne_twister_engine
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/random.h:463:11: 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++/10/bits/random.h:463:11: 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++/10/bits/random.h:463:11: 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>&&'
chameleon.cpp:26:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
26 | m = l+r>>1;
| ~^~
chameleon.cpp:15:11: warning: unused variable 'rng' [-Wunused-variable]
15 | mt19937 rng(rd);
| ^~~
chameleon.cpp:16:8: warning: unused variable 'v' [-Wunused-variable]
16 | bool v[2*N+1] = {false};
| ^
chameleon.cpp:17:7: warning: unused variable 'd' [-Wunused-variable]
17 | int d[2*N+1] = {0};
| ^