# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
543764 |
2022-03-31T10:36:02 Z |
neki |
Parrots (IOI11_parrots) |
C++14 |
|
426 ms |
7592 KB |
#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
#define ll long long
#define loop(i, a, b) for(ll i=a;i<b;++i)
#define pool(i, a, b) for(ll i=a-1;i>=b;--i)
#define fore(i, a) for(auto&& i:a)
#define fi first
#define se second
#define ps(a) push_back(a)
#define pb(a) pop_back(a)
#define eb(...) emplace_back(__VA_ARGS__)
#define sc scanf
#define vc vector
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define llmax LLONG_MAX/2
#define llmin -LLONG_MAX/2
using namespace std;
#define par pair<ll, ll>
#define ld long double
#define mod 998244353
bool addb(bool b1, bool b2, bool& carry){
bool ret = b1 ^ b2 ^ carry;
carry= (b1 && carry) || (b2 && carry) || (b1 && b2);
return ret;
}
bool subb(bool b1, bool b2, bool& carry){
bool ret = b1 ^ b2 ^ carry;
carry=(!b1 && carry) || (!b1 && b2) || (b1 && b2 && carry);
return ret;
}
struct int512{
bitset<512> arr;
int512(){}
int512(int n){arr=bitset<512> (n);}
int512(int n, int m[]){
loop(i, 0, n) loop(j, 0, 8) arr[i * 8+j]=((m[i] & (1<<j))>0);
}
int512 operator+(const int512& oth){
int512 ret;
bool carry=false;
loop(i, 0, 512) ret.arr[i]=addb(arr[i], oth.arr[i], carry);
return ret;
}
int512 operator-(const int512& oth){
int512 ret;
bool carry=false;
loop(i, 0, 512) ret.arr[i]=subb(arr[i], oth.arr[i], carry);
return ret;
}
bool operator<(const int512& oth){
pool(i, 512, 0){
if(arr[i]==0 and oth.arr[i]==1 ) return true;
if(arr[i]==1 and oth.arr[i]==0 ) return false;
}
return false;
}
bool operator<=( int512& oth){return *this<oth or !(oth<*this);}
};
bool ze=0;
const int mk=100;
int512 dp[mk][256], pr[mk][256];
void init(){
if(ze) return;
loop(i, 0, 256) dp[0][i]=int512(1);
loop(i, 1, mk) {
dp[i][0]=int512(1);
loop(j, 1, 256) dp[i][j]=dp[i][j-1]+dp[i-1][j];
}
loop(i, 0, mk){
loop(j, 0, 256) pr[i][j]=dp[i][j];
loop(j, 1, 256) pr[i][j]=pr[i][j] + pr[i][j-1];
//loop(j, 0, 256) cout << pr[i][j].arr.to_ulong()<<" ";
//cout << endl;
}
ze=1;
}
void encode(int n, int m[]){
init();
int512 a(n, m);
int myk;
loop(i, 0, mk) if(a<pr[i][255]) {myk=i;break;}
pool(k, myk+1, 0){
loop(i, 0, 256) if(a<pr[k][i]){ if(i-1>=0)a=a-pr[k][i-1];send(i);break;}
}
}
#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>
#define ll long long
#define loop(i, a, b) for(ll i=a;i<b;++i)
#define pool(i, a, b) for(ll i=a-1;i>=b;--i)
#define fore(i, a) for(auto&& i:a)
#define fi first
#define se second
#define ps(a) push_back(a)
#define pb(a) pop_back(a)
#define eb(...) emplace_back(__VA_ARGS__)
#define sc scanf
#define vc vector
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define llmax LLONG_MAX/2
#define llmin -LLONG_MAX/2
using namespace std;
#define par pair<ll, ll>
#define ld long double
#define mod 998244353
bool addb(bool b1, bool b2, bool& carry){
bool ret = b1 ^ b2 ^ carry;
carry= (b1 && carry) || (b2 && carry) || (b1 && b2);
return ret;
}
bool subb(bool b1, bool b2, bool& carry){
bool ret = b1 ^ b2 ^ carry;
carry=(!b1 && carry) || (!b1 && b2) || (b1 && b2 && carry);
return ret;
}
struct int512{
bitset<512> arr;
int512(){}
int512(int n){arr=bitset<512> (n);}
int512(int n, int m[]){
loop(i, 0, n) loop(j, 0, 8) arr[i * 8+j]=((m[i] & (1<<j))>0);
}
int512 operator+(const int512& oth){
int512 ret;
bool carry=false;
loop(i, 0, 512) ret.arr[i]=addb(arr[i], oth.arr[i], carry);
return ret;
}
int512 operator-(const int512& oth){
int512 ret;
bool carry=false;
loop(i, 0, 512) ret.arr[i]=subb(arr[i], oth.arr[i], carry);
return ret;
}
bool operator<(const int512& oth){
pool(i, 512, 0){
if(arr[i]==0 and oth.arr[i]==1 ) return true;
if(arr[i]==1 and oth.arr[i]==0 ) return false;
}
return false;
}
bool operator<=( int512& oth){return *this<oth or !(oth<*this);}
};
bool ze=0;
const int mk=100;
int512 dp[mk][256], pr[mk][256];
void init(){
if(ze) return;
loop(i, 0, 256) dp[0][i]=int512(1);
loop(i, 1, mk) {
dp[i][0]=int512(1);
loop(j, 1, 256) dp[i][j]=dp[i][j-1]+dp[i-1][j];
}
loop(i, 0, mk){
loop(j, 0, 256) pr[i][j]=dp[i][j];
loop(j, 1, 256) pr[i][j]=pr[i][j] + pr[i][j-1];
//loop(j, 0, 256) cout << pr[i][j].arr.to_ulong()<<" ";
//cout << endl;
}
ze=1;
}
void decode(int n, int l, int k[]){
init();
sort(k, k+l);
int512 ans;
loop(i, 0, l){
if(k[i]!=0) ans= ans+pr[i][k[i]-1];
}
//ans=ans + int512(1);
for(int i=0;i<n * 8;i+=8){
ll cans=0;
loop(j, 0, 8) cans+=(1<<j) * ans.arr[i+j];
output(cans);
}
}
Compilation message
encoder.cpp: In function 'void encode(int, int*)':
encoder.cpp:102:9: warning: 'myk' may be used uninitialized in this function [-Wmaybe-uninitialized]
102 | int myk;
| ^~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
206 ms |
7076 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
247 ms |
7440 KB |
Output is correct |
2 |
Correct |
269 ms |
7376 KB |
Output is correct |
3 |
Correct |
295 ms |
7400 KB |
Output is correct |
4 |
Correct |
286 ms |
7436 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
230 ms |
7408 KB |
Output is correct |
2 |
Correct |
257 ms |
7348 KB |
Output is correct |
3 |
Correct |
308 ms |
7440 KB |
Output is correct |
4 |
Correct |
286 ms |
7548 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
244 ms |
7420 KB |
Output is correct |
2 |
Correct |
316 ms |
7412 KB |
Output is correct |
3 |
Correct |
329 ms |
7392 KB |
Output is correct |
4 |
Correct |
410 ms |
7412 KB |
Output is correct |
5 |
Correct |
411 ms |
7348 KB |
Output is correct |
6 |
Correct |
411 ms |
7416 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
295 ms |
7592 KB |
Output is correct - P = 1.750000 |
2 |
Correct |
423 ms |
7436 KB |
Output is correct - P = 2.437500 |
3 |
Correct |
426 ms |
7444 KB |
Output is correct - P = 2.484848 |
4 |
Incorrect |
230 ms |
7232 KB |
Error : Output is wrong |
5 |
Incorrect |
210 ms |
7248 KB |
Error : Output is wrong |
6 |
Incorrect |
201 ms |
7176 KB |
Error : Output is wrong |
7 |
Incorrect |
193 ms |
7176 KB |
Error : Output is wrong |