QOJ.ac
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 |
|---|---|---|---|---|---|---|---|---|---|
| #155676 | #4810. Add One | Insert_Username_Here | WA | 1ms | 3680kb | C++20 | 1.1kb | 2023-09-02 00:18:02 | 2023-09-02 00:18:02 |
Judging History
answer
#include <bits/stdc++.h>
#define f first
#define s second
#define mp make_pair
using namespace std;
typedef long long ll;
const ll mod = 1e9 + 7;
// Cope Counter = at least 142
ll basis[62];
void insert(ll val) {
for(ll i = 0; i < 62; i++) {
if((val & (1ll << i)) == 0) continue;
if(!basis[i]) {
basis[i] = val;
return;
}
val ^= basis[i];
}
}
bool find(ll val) {
for(ll i = 0; i < 62; i++) {
if((val & (1ll << i)) == 0) continue;
if(!basis[i]) return 0;
val ^= basis[i];
}
return 1;
}
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
for(int i = 0; i < 62; i++) basis[i] = 0;
ll n;
cin >> n;
ll cur, bk = 0;
for(ll i = 0; i < n; i++) {
cin >> cur;
bk ^= cur;
insert(cur);
}
ll kms[62];
for(int i = 0; i < 62; i++) kms[i] = basis[i];
ll ans = bk + 1;
for(ll i = 1; i < 62; i++) {
for(int j = 0; j < 62; j++) basis[j] = 0;
for(int j = 0; j < 62; j++) insert(kms[j] ^ (1 << i));
if(find((1 << i) - 1)) ans = max(ans, bk ^ ((1 << (i + 1)) - 1));
}
cout << ans << "\n";
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3588kb
input:
4 1 2 1 2
output:
7
result:
ok 1 number(s): "7"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3588kb
input:
5 1 2 3 4 5
output:
14
result:
ok 1 number(s): "14"
Test #3:
score: 0
Accepted
time: 1ms
memory: 3600kb
input:
6 1 2 4 7 15 31
output:
47
result:
ok 1 number(s): "47"
Test #4:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
5 41 40 50 11 36
output:
99
result:
ok 1 number(s): "99"
Test #5:
score: 0
Accepted
time: 1ms
memory: 3596kb
input:
6 10 40 60 2 44 47
output:
96
result:
ok 1 number(s): "96"
Test #6:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
6 46 25 39 47 23 60
output:
107
result:
ok 1 number(s): "107"
Test #7:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
6 56 90 61 63 56 23
output:
112
result:
ok 1 number(s): "112"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3560kb
input:
7 8 83 78 19 36 6 22
output:
205
result:
ok 1 number(s): "205"
Test #9:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
7 23 23 22 78 2 29 88
output:
32
result:
ok 1 number(s): "32"
Test #10:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
7 109 80 14 27 9 45 24
output:
235
result:
ok 1 number(s): "235"
Test #11:
score: 0
Accepted
time: 1ms
memory: 3680kb
input:
7 144 152 137 143 145 139 183
output:
220
result:
ok 1 number(s): "220"
Test #12:
score: -100
Wrong Answer
time: 0ms
memory: 3592kb
input:
7 189 270 119 372 240 144 153
output:
74
result:
wrong answer 1st numbers differ - expected: '78', found: '74'