QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#664272 | #5543. The Only Mode | temmie | TL | 127ms | 66296kb | C++17 | 2.2kb | 2024-10-21 19:56:51 | 2024-10-21 19:56:51 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
#define ALL(x) x.begin(), x.end()
#define SZ(x) ((int)x.size())
#define fastio ios::sync_with_stdio(0), cin.tie(0);
using namespace std;
#ifdef LOCAL
#define cout cout << "\033[0;32m"
#define cerr cerr << "\033[0;31m"
#define endl "\n" << "\033[0m"
#else
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2,sse3,sse4,popcnt")
#define endl "\n"
#endif
const int MAX_N = 5e5+10;
const int INF = 2e18;
const int P = 1e5+10;
// declare
int n;
vector<int> v;
vector<int> d[4][4];
map<int, map<int, int>> BIT;
void update(int pos1, int pos2, int val){
pos1 += P, pos2 += P;
for (int i=pos1 ; i<MAX_N ; i+=i&-i){
for (int j=pos2 ; j<MAX_N ; j+=j&-j){
BIT[i][j] = BIT[i].find(j)!=BIT[i].end() ? min(BIT[i][j], val) : val;
}
}
}
int query(int pos1, int pos2){
pos1 += P, pos2 += P;
int ret = INF;
for (int i=pos1 ; i ; i-=i&-i){
if (BIT.find(i)==BIT.end()) continue;
for (int j=pos2 ; j ; j-=j&-j){
if (BIT[i].find(j)==BIT[i].end()) continue;
ret = min(ret, BIT[i][j]);
}
}
return ret;
}
void solve1(){
// init
for (int i=0 ; i<4 ; i++){
for (int j=0 ; j<4 ; j++){
d[i][j].resize(MAX_N);
}
}
// input
cin >> n;
v.resize(n);
for (int i=0 ; i<n ; i++) cin >> v[i];
// process
for (int i=0 ; i<n ; i++) for (int j=0 ; j<4 ; j++) for (int k=0 ; k<4 ; k++){
if (v[i]==j) d[j][k][i]++;
if (v[i]==k) d[j][k][i]--;
}
for (int i=1 ; i<n ; i++) for (int j=0 ; j<4 ; j++) for (int k=0 ; k<4 ; k++) d[j][k][i] += d[j][k][i-1];
for (int i=0 ; i<4 ; i++){
vector<vector<int>> v(n);
v.push_back({0, 0, 0, -1});
for (int j=0 ; j<n ; j++){
for (int k=0 ; k<4 ; k++){
if (i==k) continue;
v[j].push_back(d[i][k][j]);
}
v[j].push_back(j);
}
sort(v.begin(), v.end());
vector<vector<int>> buffer;
int ans = 0;
for (int i=0 ; i<n+1 ; i++){
if (i && v[i][0]!=v[i-1][0]){
for (auto x : buffer){
update(x[1], x[2], x[3]);
}
buffer.clear();
}
ans = max(ans, v[i][3]-query(v[i][1]-1, v[i][2]-1));
buffer.push_back(v[i]);
}
cout << ans << " ";
BIT.clear();
}
cout << endl;
return;
}
signed main(){
fastio;
int t = 1;
while (t--){
solve1();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 8ms
memory: 65536kb
input:
7 1 2 2 0 3 0 3
output:
4 1 5 3
result:
ok single line: '4 1 5 3 '
Test #2:
score: 0
Accepted
time: 8ms
memory: 65708kb
input:
12 2 0 1 0 2 1 1 0 2 3 3 3
output:
4 9 1 9
result:
ok single line: '4 9 1 9 '
Test #3:
score: 0
Accepted
time: 0ms
memory: 65656kb
input:
2 0 2
output:
1 0 1 0
result:
ok single line: '1 0 1 0 '
Test #4:
score: 0
Accepted
time: 0ms
memory: 65660kb
input:
12 3 0 2 2 1 0 2 1 3 3 2 3
output:
1 5 11 8
result:
ok single line: '1 5 11 8 '
Test #5:
score: 0
Accepted
time: 4ms
memory: 65600kb
input:
1 1
output:
0 1 0 0
result:
ok single line: '0 1 0 0 '
Test #6:
score: 0
Accepted
time: 127ms
memory: 66296kb
input:
4207 3 1 0 3 2 0 3 1 1 1 1 3 0 1 1 0 2 2 3 0 1 1 0 1 0 2 0 1 0 0 3 3 1 0 1 3 3 0 2 0 2 0 1 0 2 3 2 3 0 0 0 0 1 2 1 2 0 2 2 0 3 3 2 2 0 2 2 0 3 0 1 3 1 1 0 2 3 0 1 2 1 2 0 0 1 1 0 3 3 2 0 2 1 3 0 1 0 3 0 0 0 2 2 2 0 1 1 0 3 1 1 3 3 2 2 1 3 3 1 3 2 0 2 3 2 2 1 0 2 3 0 1 0 0 1 1 1 3 3 1 3 3 3 0 0 0 3 2...
output:
2330 1520 4207 1359
result:
ok single line: '2330 1520 4207 1359 '
Test #7:
score: -100
Time Limit Exceeded
input:
89925 0 0 0 3 0 3 0 2 3 2 3 1 0 0 0 2 2 1 3 3 0 0 1 0 0 3 0 1 0 0 1 1 0 0 1 2 1 3 1 2 1 2 2 1 0 2 2 3 0 0 1 0 2 3 2 3 0 0 1 0 0 1 2 1 3 0 0 0 2 1 1 0 1 3 2 2 0 0 2 3 2 3 3 1 3 3 0 2 0 2 2 0 2 1 3 0 1 1 0 0 1 0 3 1 2 2 2 0 2 0 2 3 2 0 0 2 3 3 1 0 1 2 2 2 1 2 0 0 3 2 3 0 1 1 3 3 0 0 0 3 0 2 0 0 2 3 1 ...