oj.uz

Submission #98819

# Submission time Handle Problem Language Result Execution time Memory
98819 2019-02-26T09:53:59 Z someone_aa Savez (COCI15_savez) C++17
48 / 120
 92 ms 20220 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
using namespace std;
const int maxn = 510;
const ll mod = 468395662504823;
const ll k = 37;
 
int dp[maxn], n;
vector<ll>pref[maxn];
vector<ll>suff[maxn];
string codes;
int sz[maxn];
 
bool match(int i, int j) {
    // returns true if we can put string i at string j
    if(sz[i] > sz[j]) return false;
    if(pref[j][sz[i]] == pref[i][sz[i]] && suff[j][sz[i]] == suff[i][sz[i]]) return true;
    return false;
}
 
int main() {
    cin>>n;
    for(int i=1;i<=n;i++) {
      	cin>>codes;
 		sz[i] = codes.length();
      
        pref[i].pb(0);
        ll kk = 1LL;
        for(int j=0;j<codes.length();j++) {
            ll curr = pref[i].back() + (kk * (codes[j] - 'A' + 1))%mod;
            curr %= mod;
            kk *= k;
            kk %= mod;
            pref[i].pb(curr);
        }
 
        kk = 1LL;
        suff[i].pb(0);
        for(int j=codes.length()-1;j>=0;j--) {
            ll curr = suff[i].back() + (kk * (codes[j] - 'A' + 1))%mod;
            curr %= mod;
            kk *= k;
            kk %= mod;
            suff[i].pb(curr);
        }
 
    }
 
    int result = 0;
    for(int i=1;i<=n;i++) {
        dp[i] = 1;
        for(int j=1;j<i;j++) {
            if(match(j, i)) {
                dp[i] = max(dp[i], dp[j] + 1);
            }
        }
        result = max(result ,dp[i]);
    }
    cout<<result<<"\n";
    return 0;
}

Compilation message

savez.cpp: In function 'int main()':
savez.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<codes.length();j++) {
                     ~^~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 512 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 8 ms 1792 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 17340 KB Output is correct
2 Correct 72 ms 17308 KB Output is correct
3 Correct 70 ms 19832 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2048 KB Output is correct
2 Correct 67 ms 19344 KB Output is correct
3 Correct 68 ms 20220 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 15 ms 3712 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 9 ms 1920 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 1280 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 1024 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 896 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 768 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -