#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
void setIO(string s) {
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
struct line{
int a,b;
int operator()(const int x)const{
return a*x+b;
}
};
bool check(line l1,line l2,line l3){
return (l3.b-l2.b)*(l1.a-l2.a)<=(l2.b-l1.b)*(l2.a-l3.a);
}
vector<int> kmp(string s){
vector<int>res(sz(s));
for(int i=1,j=0;i<sz(s);i++){
while(j and s[i]!=s[j])j=res[j-1];
if(s[i]==s[j])j++;
res[i]=j;
}
return res;
}
int rev(int p,int l){
return l-p-1;
}
signed main(){
setio();
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
string s,t;
cin>>s>>t;
int n=sz(s),m=sz(t);
tuple<int,int,int>ans={0,0,0};
for(int i=0;i<n;i++){
string s1=s.substr(0,i),s2=s.substr(i,n-i);
reverse(all(s1));
string t1=t,t2=t;
reverse(all(t2));
vector<int>p1=kmp(s1+'#'+t2),p2=kmp(s2+'#'+t1);
for(int j=0;j<m;j++){
int x=p2[j+sz(s2)+1],y=p1[rev(j+1,m)+sz(s1)+1];
ans=max(ans,{x+y,i-y,j-x+1});
}
}
reverse(all(t));
for(int i=0;i<n;i++){
string s1=s.substr(0,i),s2=s.substr(i,n-i);
reverse(all(s1));
string t1=t,t2=t;
reverse(all(t2));
vector<int>p1=kmp(s1+'#'+t2),p2=kmp(s2+'#'+t1);
for(int j=0;j<m;j++){
int x=p2[j+sz(s2)+1],y=p1[rev(j+1,m)+sz(s1)+1];
ans=max(ans,{x+y,i-y,rev(j+y,m)});
}
}
cout<<get<0>(ans)<<'\n'<<get<1>(ans)<<' '<<get<2>(ans)<<'\n';
}
/*
input:
zxyabcd
ztcdabxy
*/
Compilation message
necklace.cpp: In function 'void setIO(std::string)':
necklace.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
42 | freopen((s + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
necklace.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
43 | freopen((s + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
167 ms |
604 KB |
Output is correct |
| 2 |
Correct |
142 ms |
608 KB |
Output is correct |
| 3 |
Correct |
185 ms |
604 KB |
Output is correct |
| 4 |
Correct |
141 ms |
604 KB |
Output is correct |
| 5 |
Correct |
110 ms |
604 KB |
Output is correct |
| 6 |
Correct |
115 ms |
596 KB |
Output is correct |
| 7 |
Correct |
133 ms |
604 KB |
Output is correct |
| 8 |
Correct |
143 ms |
608 KB |
Output is correct |
| 9 |
Correct |
148 ms |
612 KB |
Output is correct |
