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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#89012 | #5466. Permutation Compression | _tianhangj_ | WA | 4ms | 6472kb | C++14 | 4.1kb | 2023-03-18 11:08:09 | 2023-03-18 11:08:11 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
template <class T>
T read() {
T x = T(), k = 1;
char c = getchar();
while ( c < '0' || c > '9' ) {
if ( c == '-' ) k = -1;
c = getchar();
}
while ( c >= '0' && c <= '9' ) {
x = (x<<1) + (x<<3) + c - '0';
c = getchar();
}
return x * k;
}
#define di read<int>()
#define dl read<ll>()
#include <functional>
#if __cplusplus >= 202002L
template <class T>
concept check_add_assignment = requires ( T a, T b ) { a += b; };
#endif
template < class T, unsigned long long MaxSize >
#if __cplusplus >= 202002L
requires requires ( T a, T b ) { a + b; }
#endif
class BITree {
private:
struct DataType {
T a;
DataType() : a() {}
DataType( T a_ ) : a(a_) {}
T & operator () () { return a; }
DataType & operator += ( const DataType rhs ) {
#if __cplusplus >= 202002L
if ( check_add_assignment<T> ) a += rhs.a;
else a = a + rhs.a;
#else
a = a + rhs.a;
#endif
return (*this);
}
};
typedef unsigned int _IndexType;
_IndexType size;
DataType _B_data[MaxSize];
inline _IndexType lowbit( _IndexType x ) { return ((x)&(-x)); }
public:
BITree( _IndexType n = 0 ) : size(n) {}
void init( _IndexType n ) {
size = n;
for ( _IndexType i = 1; i <= size; ++i ) {
_B_data[i] = T();
}
}
template < class _Iterator >
void init( _Iterator _begin, _Iterator _end ) {
_IndexType i = 1, j;
for ( _Iterator it = _begin; it != _end; ++it, ++i ) {
_B_data[i] = (*it);
j = i + lowbit(i);
if ( j <= size ) {
_B_data[j] += _B_data[i];
}
}
}
void init( std::function<T(_IndexType)> f ) {
_IndexType j;
for ( _IndexType i = 1; i <= size; ++i ) {
_B_data[i] = f(i);
j = i + lowbit(i);
if ( j <= size ) {
_B_data[j] += _B_data[i];
}
}
}
void update( _IndexType i, const DataType x ) {
while ( i <= size ) {
_B_data[i] += x;
i += lowbit(i);
}
}
T request( _IndexType a ) {
DataType sum = 0;
while ( a ) {
sum += _B_data[a];
a -= lowbit( a );
}
return sum();
}
};
BITree<ll,400005>bit;
ll n, m, k;
ll a[200005], b[200005];
ll p[200005], v[200005];
set <ll> s, l;
bool work() {
n = dl, m = dl, k = dl;
s.clear();l.clear();
bit.init(n+1);
for ( ll i = 1; i <= n; ++i ) {
p[i] = v[i] = 0;
a[i] = dl;
}
for ( ll i = 1; i <= m; ++i ) {
b[i] = dl;
}
for ( ll i = 1; i <= k; ++i ) {
l.insert(dl);
}
for ( ll i = 1; i <= n; ++i ) {
v[a[i]] = i;
}
ll i = 1, j = 1;
while ( j <= m ) {
while ( i <= n && a[i] != b[j] ) {
p[i] = 0;
++i;
}
if ( i > n ) {
return false;
}
p[i] = j;
++i, ++j;
}
s.insert(0), s.insert(n+1);
for ( ll i = n; i >= 1; --i ) {
if ( p[v[i]] == 0 ) {
// cerr << ">" << i << endl << '!';
// for ( auto x : s ) cerr << x;
// cerr << endl;
if ( j == k + 1 ) return false;
auto it = s.upper_bound(v[i]);
auto nit = it--;
// cerr << *nit << " " << bit.request(*nit) << endl;
// cerr << *it << " " << bit.request(max((*it)-1,0ll)) << endl;
auto _it = l.lower_bound((*nit) - (*it) - 1 - (bit.request(*nit)-bit.request(max((*it)-1,0ll))));
if ( _it == l.end() ) {
return false;
}
bit.update(v[i],1);
} else {
s.insert(v[i]);
}
}
return true;
}
int main() {
ll t = dl;
while ( t-- ) {
puts(work()?"YES":"NO");
// cerr << '\n';
}
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 6472kb
input:
3 5 2 3 5 1 3 2 4 5 2 1 2 4 5 5 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 3 2 2 3 1 2 3 2 2 3
output:
YES YES NO
result:
ok 3 lines
Test #2:
score: -100
Wrong Answer
time: 4ms
memory: 6372kb
input:
100 2 1 2 2 1 2 1 1 2 1 2 1 2 1 2 2 2 1 1 1 2 1 2 6 1 5 3 4 2 5 6 1 3 5 2 1 1 1 6 1 6 2 1 3 6 4 5 1 4 1 2 2 1 4 3 3 2 2 1 3 2 1 3 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 1 2 1 2 4 4 3 2 1 3 4 2 1 3 4 4 3 1 1 1 1 1 1 1 6 5 1 6 2 5 4 3 1 6 2 4 3 1 4 1 1 1 1 1 1 6 5 3 3 6 1 4 5 2 3 6 1 4 2 3 3 4 4 3 4 3 4 ...
output:
YES YES NO NO NO YES YES YES YES YES YES NO YES YES YES NO NO YES NO YES YES YES YES YES NO NO YES YES YES YES NO YES YES YES NO YES YES YES YES YES YES NO YES YES NO YES YES YES YES YES NO NO NO YES NO YES NO YES YES YES YES NO NO NO YES YES YES YES YES NO NO YES YES YES NO YES YES YES YES YES YES ...
result:
wrong answer 3rd lines differ - expected: 'YES', found: 'NO'