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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 |
---|---|---|---|---|---|---|---|---|---|
#828421 | #4283. Power of XOR | Rong7 | TL | 2148ms | 69456kb | C++17 | 2.7kb | 2024-12-23 16:33:11 | 2024-12-23 16:33:11 |
Judging History
answer
// Go in my style.
// Not afraid to dark.
#include <bits/stdc++.h>
using namespace std;
clock_t sttime;
#define STCLOCK sttime = clock ();
#define TIMENOW fprintf (stderr, "\nNOW TIME COSSEMED: %0.4lf\n", 1.0 * (clock () - sttime) / CLOCKS_PER_SEC);
#define inline __inline__ __attribute__ ((always_inline))
#define int long long
namespace io {
int read_pos, read_dt; char read_char;
inline int read (int &p = read_pos){
p = 0, read_dt = 1; read_char = getchar ();
while (! isdigit (read_char)){
if (read_char == '-')
read_dt = - 1;
read_char = getchar ();
}
while (isdigit (read_char)){
p = (p << 1) + (p << 3) + read_char - 48;
read_char = getchar ();
}
return p = p * read_dt;
}
int write_sta[65], write_top;
inline void write (int x){
if (x < 0)
putchar ('-'), x = - x;
write_top = 0;
do
write_sta[write_top ++] = x % 10, x /= 10;
while (x);
while (write_top)
putchar (write_sta[-- write_top] + 48);
}
}
#define ful(t) ((1ll << (t)) - 1)
const int N = 44, mod = 1e9 + 7;
int n, m, ts[N + 5], cnt;
struct LINE {
int b[N + 5];
inline bool insert (int x){
for (int i = N;i >= 0;-- i)
if (x >> i & 1){
if (b[i]) x ^= b[i];
else {
b[i] = x;
return true;
}
}
return false;
}
inline void sol (){
map < pair < int , int > , int > f, g;
f[make_pair (0, 0)] = 1;
auto upd = [&] (int i, pair < int , int > t, int w){
auto r = t;
t.first ^= w;
g[make_pair (t.first & ful (i), t.second + (t.first >> i & 1))] += f[r];
};
for (int i = N;i >= 0;-- i){
if (b[i])
for (auto x : f) upd (i, x.first, 0), upd (i, x.first, b[i]);
else for (auto x : f) upd (i, x.first, 0);
f.clear (); swap (f, g);
}
for (auto x : f) ts[x.first.second] += x.second;
}
} l;
inline int power (int a, int p){
static int res; res = 1;
while (p > 0){
if (p & 1) res = res * a % mod;
a = a * a % mod;
p >>= 1;
}
return res;
}
signed main (){
STCLOCK
io::read (n), io::read (m);
for (int i = 1;i <= n;++ i) cnt += ! l.insert (io::read ());
l.sol ();
int ans = 0;
for (int i = 1;i <= N;++ i) ans = (ans + ts[i] % mod * power (i, m)) % mod;
ans = ans * power (2, cnt) % mod;
io::write (ans), putchar ('\n');
TIMENOW
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 4020kb
input:
3 2 1 2 3
output:
12
result:
ok 1 number(s): "12"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3740kb
input:
2 1000000000 1 2
output:
140625003
result:
ok 1 number(s): "140625003"
Test #3:
score: 0
Accepted
time: 1ms
memory: 3956kb
input:
3 4 21 31 15
output:
1076
result:
ok 1 number(s): "1076"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3864kb
input:
4 10 21 16 23 30
output:
3504120
result:
ok 1 number(s): "3504120"
Test #5:
score: 0
Accepted
time: 1ms
memory: 4084kb
input:
5 795325759 23 18 18 15 24
output:
398580583
result:
ok 1 number(s): "398580583"
Test #6:
score: 0
Accepted
time: 1ms
memory: 3872kb
input:
6 425010546 15190825693299 11021868218180 10853490476696 16489831131502 15731786397897 1859285400474
output:
226806798
result:
ok 1 number(s): "226806798"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3936kb
input:
7 376524109 14035202899482 10047025581205 744778190838 10085364176616 17517303536898 10648638998430 4344258259221
output:
909089159
result:
ok 1 number(s): "909089159"
Test #8:
score: 0
Accepted
time: 2ms
memory: 3948kb
input:
8 849112677 12651182249229 2557626671152 16190796268614 7679451552477 1419165382365 16010747922241 1877804892046 6782866140038
output:
60890703
result:
ok 1 number(s): "60890703"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3984kb
input:
9 874735099 10148022499611 4300816040299 6425463859799 11220407430827 16167481816769 5361425691648 9036180330515 1461806017525 5752555300268
output:
371891946
result:
ok 1 number(s): "371891946"
Test #10:
score: 0
Accepted
time: 2ms
memory: 3932kb
input:
10 466547903 14475814446599 10414899512095 8279261110485 15402964537241 12059977291235 14960757658011 15642794803423 176456760404 8544855584093 939455648117
output:
705005476
result:
ok 1 number(s): "705005476"
Test #11:
score: 0
Accepted
time: 9ms
memory: 4276kb
input:
11 587282176 2381973819369 7896756717881 3605049079058 3476202500557 8161539414084 4107261754597 4052905214220 13489145138694 14249896320133 4915388559035 946556082447
output:
221771132
result:
ok 1 number(s): "221771132"
Test #12:
score: 0
Accepted
time: 16ms
memory: 4244kb
input:
12 416671000 12040275816251 17062751464343 7135252213488 464175530141 1680797265108 8088672081270 15974373338891 2807308701611 10474875618229 14385428199760 7217460885705 14772837072591
output:
888526388
result:
ok 1 number(s): "888526388"
Test #13:
score: 0
Accepted
time: 28ms
memory: 4944kb
input:
13 555186260 16812780767710 10577402574202 14435021461484 7629604678144 2685467464476 6345623360274 243420234591 10035113157523 3422776077242 10218637237089 14851966122299 403170012001 9905420122107
output:
990043010
result:
ok 1 number(s): "990043010"
Test #14:
score: 0
Accepted
time: 72ms
memory: 5856kb
input:
14 509328299 8353561750434 10104176798819 6443583453798 16526745760567 11644429218948 7613211796505 14675590153019 16014035780673 8977332980184 8018462423140 10321575146167 3765866187251 951943560884 16567591980900
output:
554786244
result:
ok 1 number(s): "554786244"
Test #15:
score: 0
Accepted
time: 185ms
memory: 7952kb
input:
15 608613602 13478763858236 3740903255952 1077573334827 10777446313857 9164622625061 3532139720401 10581691792868 227725402800 1100326438302 11314744041629 5716533742148 13171916589439 3380813371904 4280184438172 3241608634862
output:
451055479
result:
ok 1 number(s): "451055479"
Test #16:
score: 0
Accepted
time: 329ms
memory: 12176kb
input:
16 940201087 10256426323317 3262426443677 11042930351118 9509672586143 6874576733055 17425354233945 44840572217 271060611230 5160013582892 940549858628 3460145241956 1911512043119 6262508016313 15998335209279 4331486722244 1174379722227
output:
609521624
result:
ok 1 number(s): "609521624"
Test #17:
score: 0
Accepted
time: 636ms
memory: 20300kb
input:
17 224938820 17119676032384 14016470814638 9555327895162 4956367760197 14164877522334 11840938437493 196922732084 1117964651219 15662255500985 6799149377748 2081570899516 8101318468846 6806038800783 8481897921532 14327689591834 3468429675406 707483765694
output:
952629882
result:
ok 1 number(s): "952629882"
Test #18:
score: 0
Accepted
time: 1236ms
memory: 36688kb
input:
18 572144592 1034330548675 7466761131151 5479486866730 5805192559012 2072047969997 14094135393106 3957442001455 9636000453501 6359658906102 13786563194342 12655202300227 17497546480004 15210614567784 5757118085432 3507806179905 4092815624732 2831474245754 8905127237409
output:
711094061
result:
ok 1 number(s): "711094061"
Test #19:
score: 0
Accepted
time: 2148ms
memory: 69456kb
input:
19 655059034 10160251337230 17368680333349 7582672215712 15170782424265 11091464398448 3468569802147 12985801017272 11885768849226 2042891901510 5816113601266 17200614913667 3230577285683 6122037312518 4476865090037 17458280591698 8087876238641 12295868407218 14891985681505 9046310739642
output:
444845559
result:
ok 1 number(s): "444845559"
Test #20:
score: -100
Time Limit Exceeded
input:
20 230956009 5657766305333 6062575310370 15139059764699 15999531683504 8700249448570 8496370986569 11931362029342 16808274736949 6582914043608 3148217142903 623248093777 2603754608083 16741237934194 11551777078922 17177864498497 147568049427 2693939410255 11977553059228 14614351055705 11790115139758