結果

問題 No.1711 Divide LCM
ユーザー SSRS
提出日時 2021-10-15 23:12:44
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,338 ms / 4,000 ms
コード長 3,664 bytes
コンパイル時間 2,958 ms
コンパイル使用メモリ 207,144 KB
実行使用メモリ 75,308 KB
最終ジャッジ日時 2024-09-17 18:11:54
合計ジャッジ時間 13,679 ms
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 42
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
void dfs(vector<int> &ans, bool &ok, int &cnt, vector<unsigned long long> &hash, vector<unsigned long long> &ng, unsigned long long ch, int csz, int
    sz, int p){
if (p == cnt){
if (csz == sz){
auto itr = lower_bound(ng.begin(), ng.end(), ch);
if (itr == ng.end()){
ok = true;
} else if (*itr != ch){
ok = true;
}
}
} else {
if (csz < sz){
dfs(ans, ok, cnt, hash, ng, ch ^ hash[p], csz + 1, sz, p + 1);
if (ok){
ans.push_back(p);
return;
}
}
dfs(ans, ok, cnt, hash, ng, ch, csz, sz, p + 1);
}
}
int main(){
mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
int N;
cin >> N;
vector<int> m(N);
vector<vector<int>> p(N), e(N);
for (int i = 0; i < N; i++){
cin >> m[i];
p[i] = vector<int>(m[i]);
e[i] = vector<int>(m[i]);
for (int j = 0; j < m[i]; j++){
cin >> p[i][j] >> e[i][j];
}
}
vector<int> P;
for (int i = 0; i < N; i++){
for (int j = 0; j < m[i]; j++){
P.push_back(p[i][j]);
}
}
sort(P.begin(), P.end());
P.erase(unique(P.begin(), P.end()), P.end());
int cnt = P.size();
for (int i = 0; i < N; i++){
for (int j = 0; j < m[i]; j++){
p[i][j] = lower_bound(P.begin(), P.end(), p[i][j]) - P.begin();
}
}
vector<int> mx(cnt, -1);
for (int i = 0; i < N; i++){
for (int j = 0; j < m[i]; j++){
mx[p[i][j]] = max(mx[p[i][j]], e[i][j]);
}
}
vector<vector<int>> s(N);
for (int i = 0; i < N; i++){
for (int j = 0; j < m[i]; j++){
if (mx[p[i][j]] == e[i][j]){
s[i].push_back(p[i][j]);
}
}
}
bool ok = true;
for (int i = 0; i < N; i++){
if (s[i].size() == cnt){
ok = false;
}
}
if (!ok){
cout << -1 << endl;
} else {
vector<unsigned long long> hash(cnt, 0);
for (int i = 0; i < cnt; i++){
for (int j = 0; j < 64; j++){
hash[i] *= 2;
hash[i] += mt() % 2;
}
}
vector<unsigned long long> ng;
for (int i = 0; i < N; i++){
int cnt2 = s[i].size();
for (int j = 0; j < (1 << cnt2); j++){
int sz = __builtin_popcount(j);
unsigned long long S = 0;
for (int k = 0; k < cnt2; k++){
if ((j >> k & 1) == 1){
S ^= hash[s[i][k]];
}
}
ng.push_back(S);
}
}
sort(ng.begin(), ng.end());
ng.erase(unique(ng.begin(), ng.end()), ng.end());
vector<int> ans;
for (int i = 2; i <= 9; i++){
unsigned long long chh = 0;
bool ok2 = false;
dfs(ans, ok2, cnt, hash, ng, chh, 0, i, 0);
if (ok2){
break;
}
if (i == 2 && cnt >= 10000){
cout << -1 << endl;
return 0;
}
}
vector<int> A(N, 1);
for (int i = 0; i < N; i++){
for (int j = 0; j < m[i]; j++){
for (int k = 0; k < e[i][j]; k++){
A[i] *= P[p[i][j]];
}
}
}
int k = ans.size();
vector<vector<int>> S(k);
for (int i = 0; i < N; i++){
for (int j = 0; j < k; j++){
bool ok2 = true;
int cnt2 = s[i].size();
for (int l = 0; l < cnt2; l++){
if (s[i][l] == ans[j]){
ok2 = false;
}
}
if (ok2){
S[j].push_back(A[i]);
break;
}
}
}
cout << k << endl;
for (int i = 0; i < k; i++){
int n = S[i].size();
cout << n;
for (int j = 0; j < n; j++){
cout << ' ' << S[i][j];
}
cout << endl;
}
}
}
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