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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 |
---|---|---|---|---|---|---|---|---|---|
#482553 | #8150. XOR Sum | EasonLiang | RE | 26ms | 5356kb | C++14 | 2.6kb | 2024-07-17 20:04:10 | 2024-07-17 20:04:11 |
Judging History
answer
#include <bits/stdc++.h>
#define FileIO_(file) \
freopen (file ".in", "r", stdin); \
freopen (file ".out", "w", stdout);
using namespace std;
template<typename Tp>
inline void chmin (Tp &x, const Tp &y) { if (y < x) x = y; }
template<typename Tp>
inline void chmax (Tp &x, const Tp &y) { if (x < y) x = y; }
typedef double dbl;
typedef long long ll;
typedef long double ldb;
void init () {}
const int maxh = 4e1 + 2;
const int maxk = 18e0 + 2;
const int maxr = 2e2 + 20;
const ll mod = 1e9 + 7;
int k;
ll n, m, binom[maxk][maxk], dp[maxh][maxr][maxk];
void trans (int h, int pr, int nr, int pc, int nc, ll tk) {
if (maxr <= nr || nr < 0) return;
(dp[h][nr][nc] += dp[h + 1][pr][pc] * tk) %= mod;
}
void solve () {
scanf ("%lld%lld%d", &n, &m, &k);
binom[0][0] = 1ll;
for (int i = 1; i <= k; ++i) {
binom[i][0] = 1ll;
for (int j = 1; j <= i; ++j) {
binom[i][j] = binom[i - 1][j - 1] + binom[i - 1][j];
}
}
dp[40][n >> 40][0] = 1ll;
for (int i = 39; ~i; --i) {
for (int pr = 0; pr < maxr; ++pr) {
int nr = (pr << 1) | (n >> i & 1);
for (int j = 0; j <= k; ++j) {
for (int l = 0; l <= j; ++l) {
if (m >> i & 1) {
for (int c = 0, clim = k - j; c <= clim; ++c) {
trans (i, pr, nr - (k - l - c) * (l + c), j, j + (clim - c), binom[j][l] * binom[clim][c] % mod);
}
} else {
trans (i, pr, nr - (k - l) * l, j, j, binom[j][l]);
}
}
}
}
// for (int r = 0; r < maxr; ++r) {
// for (int j = 0; j <= k; ++j) {
// if (dp[i][r][j]) {
// fprintf (stderr, "%d %d %d %lld\n", i, r, j, dp[i][r][j]);
// }
// }
// }
}
printf ("%lld\n", accumulate (dp[0][0], dp[0][0] + k + 1, 0ll) % mod);
}
int main () {
// #ifndef LSY
// FileIO_("");
// #endif
int t = 1; init ();
// scanf ("%d", &t);
while (t--) solve ();
return 0;
}
// #ifdef LSY
// bool ed, debug = [] () {
// static bool st; int memtyp = 0; dbl memsiz = &st - &ed;
// static const string memstr[] = {"B", "KB", "MB", "GB"};
// while (memsiz >= 1024.) { ++memtyp; memsiz /= 1024.; }
// cerr << "Memory: " << memsiz << memstr[memtyp] << endl;
// return atexit ([] () { cerr << "Time: " << 1000. *
// clock () / CLOCKS_PER_SEC << "ms" << endl; });
// } ();
// #endif
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 5292kb
input:
6 2 3
output:
12
result:
ok 1 number(s): "12"
Test #2:
score: 0
Accepted
time: 2ms
memory: 5252kb
input:
30 6 5
output:
1520
result:
ok 1 number(s): "1520"
Test #3:
score: 0
Accepted
time: 1ms
memory: 5348kb
input:
0 0 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 5356kb
input:
0 0 2
output:
1
result:
ok 1 number(s): "1"
Test #5:
score: 0
Accepted
time: 1ms
memory: 5168kb
input:
0 1145141919 2
output:
145141913
result:
ok 1 number(s): "145141913"
Test #6:
score: 0
Accepted
time: 4ms
memory: 5216kb
input:
0 0 18
output:
1
result:
ok 1 number(s): "1"
Test #7:
score: 0
Accepted
time: 14ms
memory: 5312kb
input:
0 12412414 18
output:
12412415
result:
ok 1 number(s): "12412415"
Test #8:
score: 0
Accepted
time: 7ms
memory: 5232kb
input:
32071009996106 682053093123 12
output:
443207413
result:
ok 1 number(s): "443207413"
Test #9:
score: 0
Accepted
time: 0ms
memory: 5300kb
input:
35533005762427 688386210611 9
output:
0
result:
ok 1 number(s): "0"
Test #10:
score: 0
Accepted
time: 15ms
memory: 5300kb
input:
35533005762427 688386210611 18
output:
132815685
result:
ok 1 number(s): "132815685"
Test #11:
score: 0
Accepted
time: 26ms
memory: 5228kb
input:
12412412412412 549755813887 18
output:
769139144
result:
ok 1 number(s): "769139144"
Test #12:
score: 0
Accepted
time: 18ms
memory: 5220kb
input:
12412412412412 549755813887 17
output:
256540093
result:
ok 1 number(s): "256540093"
Test #13:
score: 0
Accepted
time: 13ms
memory: 5216kb
input:
12412412412412 549755813887 15
output:
661919152
result:
ok 1 number(s): "661919152"
Test #14:
score: 0
Accepted
time: 0ms
memory: 5312kb
input:
8213830533897 180838478436 12
output:
960275439
result:
ok 1 number(s): "960275439"
Test #15:
score: 0
Accepted
time: 13ms
memory: 5228kb
input:
8213830533897 180838478436 18
output:
794870059
result:
ok 1 number(s): "794870059"
Test #16:
score: 0
Accepted
time: 6ms
memory: 5312kb
input:
56737445336495 759179417237 12
output:
0
result:
ok 1 number(s): "0"
Test #17:
score: 0
Accepted
time: 15ms
memory: 5292kb
input:
56737445336495 759179417237 18
output:
302105482
result:
ok 1 number(s): "302105482"
Test #18:
score: 0
Accepted
time: 6ms
memory: 5312kb
input:
56737445336495 759179417237 15
output:
0
result:
ok 1 number(s): "0"
Test #19:
score: 0
Accepted
time: 5ms
memory: 5172kb
input:
12412412412412 274877906944 18
output:
430003400
result:
ok 1 number(s): "430003400"
Test #20:
score: 0
Accepted
time: 5ms
memory: 5232kb
input:
32412412412412 274877906944 18
output:
657686236
result:
ok 1 number(s): "657686236"
Test #21:
score: -100
Runtime Error
input:
562949953421311 549755813887 18