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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#606421 | #7332. Dissertation | HALZOOM | WA | 19ms | 100152kb | C++14 | 1.7kb | 2024-10-03 06:05:26 | 2024-10-03 06:05:26 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int long long int
void UwU(void){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
}
void fileIO(void) {
#ifndef ONLINE_JUDGE
freopen("Input.txt", "r", stdin);
freopen("Output.txt", "w", stdout);
#endif
}
int dx_all[8] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy_all[8] = {0, 1, 0, -1, -1, 1, -1, 1};
char di[] = {'R' , 'L' , 'U' , 'D'};
int dx[] = { 1 , -1 , 0 , 0};
int dy[] = { 0 , 0 , -1 , 1};
const double pi = 3.14159265358979323846;
const int N = 5e3 + 3 , M = 1e3 + 5;
const int MOD = 1000000007;
const int inf = 1e18;
string s , t;
int n , m;
vector<vector<int>>idx(26);
int mem[N];
int dp(int i , int last){
if(i == m || last >= n)return 0;
int &res = mem[i];
if(~res)return res;
//cout << last << ' ';
auto it = upper_bound(idx[t[i]].begin() , idx[t[i]].end() , last);
if(it == idx[t[i]].end()){
res = dp(i + 1 , last);
}
else{
//cout << *it << ' ';
res = max(1 + dp(i + 1 , *it) , 0ll);
}
return res;
}
void solve() {
memset(mem , -1 , sizeof mem);
cin >> s >> t;
n = s.size();
m = t.size();
for(auto &c : s){
c -= 'a';
}
for(auto &c : t){
c -= 'a';
}
for(int i = 0 ; i < n ; ++i){
idx[s[i]].push_back(i);
}
// for(int i = 0 ; i < 26 ; ++i){
// for(auto j : idx[i]){
// cout << j << ' ';
// }
// cout << '\n';
// }
cout << dp(0 , 0) << '\n';
}
signed main()
{
UwU();
fileIO();
int test = 1;
cin >> test;
while(test--) {
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3668kb
input:
1 abcdefghijklmnopqrstuvwxyz bbddee
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: -100
Wrong Answer
time: 19ms
memory: 100152kb
input:
4106 ababbbab babaa aabaaaaa bbbab aababaab bbaab aababbba aaaaa aabbabbb baabb aabababb abbbb aabbabab babaa aaabbaaa aaabb aaababba ababb aabbbaba abaaa abbbaaba bbbab aaaababb aabab abbbaaba abbba abbbabbb bbbaa aaabaaaa aaabb abbababb baaaa aaaababb babbb abaaaaab aabaa ababaaab aabaa abbbabaa b...
output:
4 4 5 5 5 4 4 5 5 5 4 4 4 4 4 5 5 5 4 4 5 5 5 5 4 5 3 5 5 5 5 2 4 5 4 4 5 4 5 3 4 5 4 5 5 5 5 5 4 5 5 4 5 5 3 4 4 3 5 4 4 5 4 5 4 5 5 5 3 5 5 4 5 5 4 4 5 4 4 5 5 5 5 5 5 4 5 5 5 5 4 5 5 5 5 5 4 3 4 5 5 5 5 5 5 4 5 5 4 3 4 5 4 5 4 5 5 5 4 5 5 3 5 5 5 5 5 5 5 5 5 5 5 4 5 5 5 4 4 5 5 4 3 4 4 4 4 4 5 3 ...
result:
wrong answer 2nd numbers differ - expected: '2', found: '4'