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Submission #596897

# Submission time Handle Problem Language Result Execution time Memory
596897 2022-07-15T09:03:55 Z jy0n Round words (IZhO13_rowords) C++17
76 / 100
 100 ms 308 KB 
#include <bits/stdc++.h>
using namespace std;
using ull=unsigned long long;

const int Sigma= 26;
string A, B;
vector<ull> d, s[Sigma];

#define set_bit(bs, i) (bs[i>>6] |= 1llu << (i&63))
#define get_bit(bs, i) ((bs[i>>6] >> (i&63))&1)
#define sub(a, b) ((a-b>a)? (a-=b, 1) : (a-=b, 0))

int main() {
    cin >> A >> B;
    int n = (int)A.size(), m = (int)B.size(), l = (m>>6)+1, ans=0;
    d.resize(l);
    for (int i=0; i<Sigma; ++i) s[i].resize(l);
    for (int i=0; i<m; ++i) set_bit(s[B[i]-'a'], i);
    for (int k=0; k<n; ++k) {
        memset(&d[0], 0, sizeof(ull)*l);
        for (int i=0; i<m; ++i) if (A[k] == B[i]) { set_bit(d, i); break; }
        for (int i=1; i<n; ++i) {
            ull sc = 1, mc = 0;
            for (int j=0; j<l; ++j) {
                ull x = s[A[(k+i)%n]-'a'][j]|d[j];
                ull t = (d[j] << 1)|sc;
                sc = d[j] >> 63;
                ull tt = x;
                mc = sub(tt, mc) + sub(tt, t);
                d[j] = x&(x^tt);
            }
        }
        int ret = 0;
        for (int i=0; i<m; ++i) ret += get_bit(d, i);
        ans=max(ans, ret);
    }
    cout << ans << endl;
}

Compilation message

rowords.cpp: In function 'int main()':
rowords.cpp:11:31: warning: operation on 'tt' may be undefined [-Wsequence-point]
   11 | #define sub(a, b) ((a-b>a)? (a-=b, 1) : (a-=b, 0))
......
   29 |                 mc = sub(tt, mc) + sub(tt, t);
      |                          ~~~~~~
rowords.cpp:29:22: note: in expansion of macro 'sub'
   29 |                 mc = sub(tt, mc) + sub(tt, t);
      |                      ^~~

Subtask #1
76.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 9 ms 212 KB Output is correct
7 Correct 55 ms 212 KB Output is correct
8 Incorrect 49 ms 304 KB Output isn't correct
9 Correct 53 ms 300 KB Output is correct
10 Correct 61 ms 212 KB Output is correct
11 Correct 59 ms 212 KB Output is correct
12 Correct 74 ms 292 KB Output is correct
13 Correct 76 ms 296 KB Output is correct
14 Correct 65 ms 292 KB Output is correct
15 Correct 82 ms 212 KB Output is correct
16 Correct 58 ms 296 KB Output is correct
17 Incorrect 68 ms 284 KB Output isn't correct
18 Correct 100 ms 288 KB Output is correct
19 Correct 50 ms 288 KB Output is correct
20 Incorrect 77 ms 212 KB Output isn't correct
21 Correct 34 ms 212 KB Output is correct
22 Correct 48 ms 212 KB Output is correct
23 Correct 74 ms 284 KB Output is correct
24 Incorrect 80 ms 300 KB Output isn't correct
25 Incorrect 100 ms 308 KB Output isn't correct