# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
96261 | Noam527 | Parrots (IOI11_parrots) | C++17 | 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 <bits/stdc++.h>
#define CHECK cout << "ok" << endl
#define finish(x) return cout << x << endl, 0
typedef long long ll;
typedef long double ldb;
const int md = 1e9 + 7;
const ll inf = 9e18;
using namespace std;
struct bigint {
const int lim = 1000000, lg = 6;
vector<int> a;
bigint(int val = 0) {
a.clear();
a.push_back(val);
clear();
}
bigint(vector<int> &b) {
a = b;
clear();
}
void clear() {
int s = 0;
for (int i = 0; i < a.size(); i++) {
a[i] += s;
s = a[i] / lim;
a[i] %= lim;
if (a[i] < 0) {
s--;
a[i] += lim;
}
}
while (s > 0) {
a.push_back(s % lim);
s /= lim;
}
while (a.size() > 1 && a.back() == 0) a.pop_back();
}
int operator [](int k) const {
return a[k];
}
int size() const {
return a.size();
}
void operator = (const bigint &b) {
a = b.a;
clear();
}
bigint operator + (const bigint &b) const {
vector<int> c(max((int)a.size(), b.size()));
for (int i = 0; i < a.size() || i < b.size(); i++) {
c[i] = 0;
if (i < a.size()) c[i] += a[i];
if (i < b.size()) c[i] += b[i];
}
return bigint(c);
}
void operator += (const bigint &b) {
for (int i = 0; i < b.size(); i++) {
if (i >= a.size()) a.push_back(0);
a[i] += b[i];
}
clear();
}
void operator += (int val) {
a[0] += val;
clear();
}
bigint operator - (const bigint &b) const {
vector<int> c(max((int)a.size(), b.size()));
for (int i = 0; i < a.size() || i < b.size(); i++) {
c[i] = 0;
if (i < a.size()) c[i] += a[i];
if (i < b.size()) c[i] -= b[i];
}
return bigint(c);
}
void operator -= (const bigint &b) {
for (int i = 0; i < b.size(); i++) {
if (i >= a.size()) a.push_back(0);
a[i] -= b[i];
}
clear();
}
void operator -= (int val) {
a[0] -= val;
clear();
}
void operator *= (int val) {
for (int i = 0; i < a.size(); i++) a[i] *= val;
clear();
}
bool operator < (const bigint &b) const {
if (a.size() != b.size()) return a.size() < b.size();
for (int i = (int)a.size() - 1; i >= 0; i--)
if (a[i] != b[i]) return a[i] < b[i];
return false;
}
bool operator > (const bigint &b) const {
if (a.size() != b.size()) return a.size() > b.size();
for (int i = (int)a.size() - 1; i >= 0; i--)
if (a[i] != b[i]) return a[i] > b[i];
return false;
}
};
const int lim1 = 259, lim2 = 333;
bigint dp[lim1][lim2]; // number of 0's, number of 1's
bigint pw[70][256]; // pw[i][j] = 256^i * j
void preprocess() {
for (int i = 0; i < lim1; i++)
dp[i][0] = bigint(1);
for (int j = 0; j < lim2; j++)
dp[0][j] = bigint(1);
for (int i = 1; i < lim1; i++) for (int j = 1; j < lim2; j++)
dp[i][j] = dp[i - 1][j] + dp[i][j - 1];
for (int i = 0; i < 256; i++) pw[0][i] = bigint(i);
for (int i = 1; i < 70; i++) {
pw[i][0] = bigint(0);
pw[i][1] = bigint(pw[i - 1][255] + pw[i - 1][1]);
for (int j = 2; j < 256; j++)
pw[i][j] = pw[i][1] + pw[i][j - 1];
}
}
vector<int> tocount(vector<int> &a) {
int n = 5 * (int)a.size();
bigint code(0);
for (const auto &i : a) {
code *= 256;
code += i;
}
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
vector<int> cnt(257, 0);
int left = 256;
while (left > 0 && n > 0) {
if (code < dp[left - 1][n]) {
left--;
}
else {
code -= dp[left - 1][n];
cnt[left]++;
n--;
}
}
while (n > 0) {
cnt[left]++;
n--;
}
// cout << "after adding:\n";
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
return cnt;
}
vector<int> tovector(int origsz, vector<int> c) {
int n = 0, nn = origsz;
bigint code(0);
int left = 0;
while (c[left] > 0) {
c[left]--;
n++;
}
while (left <= 256) {
while (c[left] > 0) {
n++;
c[left]--;
code += dp[left - 1][n];
// cout << "adding " << left - 1 << " " << n << '\n';
}
left++;
}
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
n = nn;
vector<int> rtn(n, -1);
for (int i = n - 1; i >= 0; i--) {
for (int j = 255; j >= 0; j--) {
if (!(pw[i][j] > code)) {
code -= pw[i][j];
rtn[n - 1 - i] = j;
break;
}
}
}
return rtn;
}
#include "encoder.h"
#include "manager.h"
/*
void send(int a) {
cout << a << " ";
}
*/
void encode(vector<int> M) {
if (dp[0][0].a[0] != 1) {
preprocess();
}
M = tocount(M);
for (int i = 0; i < 256; i++)
for (int j = 0; j < M[i]; j++)
send(i);
}
/*
int main() {
int n;
cin >> n;
vector<int> a(n);
for (auto &i : a) cin >> i;
encode(a);
}
*/
#include <bits/stdc++.h>
#define CHECK cout << "ok" << endl
#define finish(x) return cout << x << endl, 0
typedef long long ll;
typedef long double ldb;
const int md = 1e9 + 7;
const ll inf = 9e18;
using namespace std;
struct bigint2 {
const int lim = 1000000, lg = 6;
vector<int> a;
bigint2(int val = 0) {
a.clear();
a.push_back(val);
clear();
}
bigint2(vector<int> &b) {
a = b;
clear();
}
void clear() {
int s = 0;
for (int i = 0; i < a.size(); i++) {
a[i] += s;
s = a[i] / lim;
a[i] %= lim;
if (a[i] < 0) {
s--;
a[i] += lim;
}
}
while (s > 0) {
a.push_back(s % lim);
s /= lim;
}
while (a.size() > 1 && a.back() == 0) a.pop_back();
}
int operator [](int k) const {
return a[k];
}
int size() const {
return a.size();
}
void operator = (const bigint2 &b) {
a = b.a;
clear();
}
bigint2 operator + (const bigint2 &b) const {
vector<int> c(max((int)a.size(), b.size()));
for (int i = 0; i < a.size() || i < b.size(); i++) {
c[i] = 0;
if (i < a.size()) c[i] += a[i];
if (i < b.size()) c[i] += b[i];
}
return bigint2(c);
}
void operator += (const bigint2 &b) {
for (int i = 0; i < b.size(); i++) {
if (i >= a.size()) a.push_back(0);
a[i] += b[i];
}
clear();
}
void operator += (int val) {
a[0] += val;
clear();
}
bigint2 operator - (const bigint2 &b) const {
vector<int> c(max((int)a.size(), b.size()));
for (int i = 0; i < a.size() || i < b.size(); i++) {
c[i] = 0;
if (i < a.size()) c[i] += a[i];
if (i < b.size()) c[i] -= b[i];
}
return bigint2(c);
}
void operator -= (const bigint2 &b) {
for (int i = 0; i < b.size(); i++) {
if (i >= a.size()) a.push_back(0);
a[i] -= b[i];
}
clear();
}
void operator -= (int val) {
a[0] -= val;
clear();
}
void operator *= (int val) {
for (int i = 0; i < a.size(); i++) a[i] *= val;
clear();
}
bool operator < (const bigint2 &b) const {
if (a.size() != b.size()) return a.size() < b.size();
for (int i = (int)a.size() - 1; i >= 0; i--)
if (a[i] != b[i]) return a[i] < b[i];
return false;
}
bool operator > (const bigint2 &b) const {
if (a.size() != b.size()) return a.size() > b.size();
for (int i = (int)a.size() - 1; i >= 0; i--)
if (a[i] != b[i]) return a[i] > b[i];
return false;
}
};
const int lim3 = 259, lim4 = 333;
bigint2 dp2[lim3][lim4]; // number of 0's, number of 1's
bigint2 pw2[70][256]; // pw2[i][j] = 256^i * j
void preprocess2() {
for (int i = 0; i < lim3; i++)
dp2[i][0] = bigint2(1);
for (int j = 0; j < lim4; j++)
dp2[0][j] = bigint2(1);
for (int i = 1; i < lim3; i++) for (int j = 1; j < lim4; j++)
dp2[i][j] = dp2[i - 1][j] + dp2[i][j - 1];
for (int i = 0; i < 256; i++) pw2[0][i] = bigint2(i);
for (int i = 1; i < 70; i++) {
pw2[i][0] = bigint2(0);
pw2[i][1] = bigint2(pw2[i - 1][255] + pw2[i - 1][1]);
for (int j = 2; j < 256; j++)
pw2[i][j] = pw2[i][1] + pw2[i][j - 1];
}
}
vector<int> tocount2(vector<int> &a) {
int n = 5 * (int)a.size();
bigint2 code(0);
for (const auto &i : a) {
code *= 256;
code += i;
}
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
vector<int> cnt(257, 0);
int left = 256;
while (left > 0 && n > 0) {
if (code < dp2[left - 1][n]) {
left--;
}
else {
code -= dp2[left - 1][n];
cnt[left]++;
n--;
}
}
while (n > 0) {
cnt[left]++;
n--;
}
// cout << "after adding:\n";
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
return cnt;
}
vector<int> tovector2(int origsz, vector<int> c) {
int n = 0, nn = origsz;
bigint2 code(0);
int left = 0;
while (c[left] > 0) {
c[left]--;
n++;
}
while (left <= 256) {
while (c[left] > 0) {
n++;
c[left]--;
code += dp2[left - 1][n];
// cout << "adding " << left - 1 << " " << n << '\n';
}
left++;
}
// cout << "code\n";
// for (const auto &i : code.a) cout << i << " "; cout << '\n';
n = nn;
vector<int> rtn(n, -1);
for (int i = n - 1; i >= 0; i--) {
for (int j = 255; j >= 0; j--) {
if (!(pw2[i][j] > code)) {
code -= pw2[i][j];
rtn[n - 1 - i] = j;
break;
}
}
}
return rtn;
}
#include "decoder.h"
#include "manager.h"
/*
void output(int b) {
cout << b << " ";
}
*/
void decode(int N, vector<int> X) {
if (dp2[0][0].a[0] != 1) {
preprocess2();
}
vector<int> cnt(257, 0);
for (auto &i : X) cnt[i]++;
X = tovector2(N, cnt);
for (auto &i : X) output(i);
}
/*
int main() {
int n, m;
cin >> n >> m;
vector<int> x(m);
for (auto &i : x) cin >> i;
decode(n, x);
}
*/