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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#538093 | #5084. Longest Substring | Tiga_Pilot_2 | WA | 85ms | 9248kb | C++20 | 4.9kb | 2024-08-30 23:45:30 | 2024-08-30 23:45:30 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge {c b, e;};
sim > rge<c> range(c i, c j) {return rge<c>{i,j};}
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug{
~debug() {cerr << endl;}
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair <b, c> d) {
ris <<"(" <<d.fi <<", " <<d.se <<")";
}
sim dor(rge<c> d) {
*this << "[";
for(auto it=d.b;it!=d.e;++it) {
*this <<", " + 2*(it==d.b) <<*it;
}
ris << "]";
}
};
#define imie(...) "[" <<#__VA_ARGS__ ": " << (__VA_ARGS__) <<"]"
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define per(i, a, b) for(int i = a; i > (b); --i)
#define ar array
#define sz(x) (int) (x).size()
#define pii pair<int,int>
#define fi first
#define se second
typedef long long ll;
typedef pair<ll,ll> pll;
typedef pair<double,double> pdd;
typedef pair<double,int> pdi;
typedef vector<int> vi;
#define all(x) (x).begin(), (x).end()
template<typename T>
void min_self(T& A, T B) {
A = min(A,B);
}
template<typename T>
void max_self(T& A, T B) {
A = max(A,B);
}
const int mxn=5e4;
int n;
string s;
struct SuffixArray {
vi sa, lcp;
SuffixArray(string& s, int lim=256) { // or basic_string<int>
int n = sz(s) + 1, k = 0, a, b;
vi x(all(s)+1), y(n), ws(max(n, lim)), rank(n);
sa = lcp = y, iota(all(sa), 0);
for (int j = 0, p = 0; p < n; j = max(1, j * 2), lim = p) {
p = j, iota(all(y), n - j);
rep(i,0,n) if (sa[i] >= j) y[p++] = sa[i] - j;
fill(all(ws), 0);
rep(i,0,n) ws[x[i]]++;
rep(i,1,lim) ws[i] += ws[i - 1];
for (int i = n; i--;) sa[--ws[x[y[i]]]] = y[i];
swap(x, y), p = 1, x[sa[0]] = 0;
rep(i,1,n) a = sa[i - 1], b = sa[i], x[b] =
(y[a] == y[b] && y[a + j] == y[b + j]) ? p - 1 : p++;
}
rep(i,1,n) rank[sa[i]] = i;
for (int i = 0, j; i < n - 1; lcp[rank[i++]] = k)
for (k && k--, j = sa[rank[i] - 1];
s[i + k] == s[j + k]; k++);
}
};
template<class T>
struct RMQ {
vector<vector<T>> jmp;
RMQ(const vector<T>& V) : jmp(1, V) {
for (int pw = 1, k = 1; pw * 2 <= sz(V); pw *= 2, ++k) {
jmp.emplace_back(sz(V) - pw * 2 + 1);
rep(j,0,sz(jmp[k]))
jmp[k][j] = min(jmp[k - 1][j], jmp[k - 1][j + pw]);
}
}
T query(int a, int b) {
assert(a < b); // or return inf if a == b
int dep = 31 - __builtin_clz(b - a);
return min(jmp[dep][a], jmp[dep][b - (1 << dep)]);
}
};
void solve() {
cin >>s;
n = sz(s);
SuffixArray sa(s);
RMQ<int> rmq(sa.lcp);
vector<pii> ans(n,{0,0});
ans[0] = {1,n};
set<int> st;
int la=-1,ra=-1;
auto eval = [&](int lenj) -> pii {
int notoverlap = 0;
int r = -1;
while(true) {
auto it = st.upper_bound(r);
if(it==st.end()) {
break;
} else {
notoverlap++;
r = (*it)+lenj-1;
}
}
return {notoverlap,lenj};
};
rep(i,1,n) {
int start = sa.sa[i];
if(ra<i) {
la = i, ra=i;
st.clear();
st.insert(start);
}
// int len = n-start;
rep(lenj,sa.lcp[i]+1,sa.lcp[i+1]+1) {
int ri = i+1;
int l=i+1, r=n;
while(l<=r) {
int mid = (l+r)/2;
int qry = rmq.query(i+1,mid+1);
if(qry>=lenj) {
ri = mid;
l = mid+1;
} else {
r = mid-1;
}
}
int k = ri-i+1;
if(ra<=ri) {
rep(j,ra+1,ri+1) {
st.insert(sa.sa[j]);
}
ra = ri;
} else if(ra-ri < ri-la) {
// debug() <<imie(la) imie(ri);
per(j,ra,ri) {
st.erase(sa.sa[j]);
}
ra = ri;
} else {
rep(j,la+1,ri+1) {
st.insert(sa.sa[j]);
}
ra = ri;
}
// debug() <<imie(la) imie(ra);
max_self(ans[k-1], eval(lenj));
}
st.erase(start);
la++;
}
rep(i,0,n) {
cout <<ans[i].se <<" \n"[i==n-1];
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
solve();
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3532kb
input:
ababa
output:
5 2 1 0 0
result:
ok single line: '5 2 1 0 0'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
aaaaaaaa
output:
8 7 6 5 4 3 2 1
result:
ok single line: '8 7 6 5 4 3 2 1'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
a
output:
1
result:
ok single line: '1'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3616kb
input:
abcdefghijklmnopqrstuvwxyz
output:
26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
result:
ok single line: '26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
Test #5:
score: 0
Accepted
time: 75ms
memory: 9248kb
input:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
output:
50000 49999 49998 49997 49996 49995 49994 49993 49992 49991 49990 49989 49988 49987 49986 49985 49984 49983 49982 49981 49980 49979 49978 49977 49976 49975 49974 49973 49972 49971 49970 49969 49968 49967 49966 49965 49964 49963 49962 49961 49960 49959 49958 49957 49956 49955 49954 49953 49952 49951 ...
result:
ok single line: '50000 49999 49998 49997 49996 ...4 13 12 11 10 9 8 7 6 5 4 3 2 1'
Test #6:
score: 0
Accepted
time: 85ms
memory: 7928kb
input:
abababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababab...
output:
50000 49998 49996 49994 49992 49990 49988 49986 49984 49982 49980 49978 49976 49974 49972 49970 49968 49966 49964 49962 49960 49958 49956 49954 49952 49950 49948 49946 49944 49942 49940 49938 49936 49934 49932 49930 49928 49926 49924 49922 49920 49918 49916 49914 49912 49910 49908 49906 49904 49902 ...
result:
ok single line: '50000 49998 49996 49994 49992 ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
Test #7:
score: -100
Wrong Answer
time: 15ms
memory: 5844kb
input:
hnpyezhavuychdbjldxjofydbuekupcjllbrtehyfangipyjjqhivkyhnlrotjgftqhwlpvmsjtikgsspaxswleauvtzbmqjdywpnilqhawmcqprtynqylzbjganroyiwcbiyqklolxabdowwkrxhzuahgjabvvrkdelzvtdsavbipxpddsopnnxjwasoxnpgknyxrcuypmbgvgymrlymkcufnptcdwbpihxhayfqoylfvrgzhhferphxfjruejyztauvklpchuxduvosjrbwqvnofdnzhtkvwwbdenlzkyf...
output:
30918 3 3 3 3 3 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 0 2 2 0 2 2 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
wrong answer 1st lines differ - expected: '30918 6 4 3 3 3 3 3 0 0 0 0 0 ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0', found: '30918 3 3 3 3 3 3 3 0 0 0 0 0 ...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'