Submission #00341

ソースコード

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#include <bits/stdc++.h>
using namespace std;
const int MOD = 1e9 + 7;
const int MAX = 1e5 + 10;
long long factArray[MAX], invFactArray[MAX], invArray[MAX];
long long powMod(long long a, long long p) {
if (p == 0) {
return 1;
}
if (p % 2) {
return a * powMod(a, p - 1) % MOD;
} else {
long long t = powMod(a, p / 2);
return t * t % MOD;
}
}
long long fact(int n) {
if (factArray[n] != -1) {
return factArray[n];
}
return factArray[n] = n * fact(n - 1) % MOD;
}
using row = std::vector<long long>;
using matrix = std::vector<row>;
//(A * B) mod
matrix matrixMul(matrix &A, matrix &B, const int mod) {
const int asz = A.size();
const int bsz = B.size();
const int bcolsz = B.front().size();
matrix res(asz, row(bcolsz, 0));
for (int i = 0; i < asz; i++) {
for (int k = 0; k < bsz; k++) {
for (int j = 0; j < bcolsz; j++) {
(res[i][j] += A[i][k] * B[k][j]) %= mod;
}
}
}
return res;
}
//(mat^p) mod
matrix matPowMod(matrix &mat, long long p, const int mod) {
const int matsz = mat.size();
assert(mat.front().size() == matsz);//must square matrix!!
matrix res(matsz, row(matsz, 0));
for (int i = 0; i < matsz; i++) {
res[i][i] = 1;
}
while (p) {
if (p & 1) res = matrixMul(res, mat, mod);
mat = matrixMul(mat, mat, mod);
p >>= 1;
}
return res;
}
// ( matrix * vector ) % mod
row mul(matrix mat, row r, const int mod) {
assert(mat[0].size() == r.size());
row res(mat.size(), 0);
for (int i = 0; i < mat.size(); i++) {
for (int j = 0; j < r.size(); j++) {
(res[i] += mat[i][j] * r[j]) %= mod;
}
}
return res;
}
long long allCnt[10], cntCnt[10];
long long a[MAX], b[MAX];
pair<long long, long long> mi = make_pair(MOD, 9);
long long calcMinNum() {
long long res = 0;
if (cntCnt[0]) {
allCnt[mi.first] -= mi.second;
vector<vector<long long>> mat(2, vector<long long>(2));
mat[0][0] = 10;
mat[0][1] = mi.first;
mat[1][0] = 0;
mat[1][1] = 1;
auto powMat = matPowMod(mat, mi.second - 1, MOD);
auto row = mul(powMat, vector<long long>{mi.first, 1}, MOD);
(res *= powMod(10, mi.second)) %= MOD;
(res += row[0]) %= MOD;
}
for (int i = 0; i < 10; i++) {
if (allCnt[i]) {
vector<vector<long long>> mat(2, vector<long long>(2));
mat[0][0] = 10;
mat[0][1] = i;
mat[1][0] = 0;
mat[1][1] = 1;
auto powMat = matPowMod(mat, allCnt[i] - 1, MOD);
auto row = mul(powMat, vector<long long>{i, 1}, MOD);
(res *= powMod(10, allCnt[i])) %= MOD;
(res += row[0]) %= MOD;
}
}
return res;
}
int main() {
memset(factArray, -1, sizeof(factArray));
factArray[0] = 1;
int N;
scanf("%d", &N);
for (int i = 0; i < N; i++) {
scanf("%lld%lld", a + i, b + i);
allCnt[a[i]] += b[i];
cntCnt[a[i]]++;
if (a[i] != 0) {
mi = min(mi, make_pair(a[i], b[i]));
}
}
int miCnt = 0;
for (int i = 0; i < N; i++) {
if (a[i] == mi.first && b[i] == mi.second) ++miCnt;
}
if (N == 1 && allCnt[0]) {
puts("0\n1");
return 0;
}
const long long miNum = calcMinNum();
if (allCnt[0]) {
cntCnt[mi.first] -= miCnt;
}
long long comb = 1;
for (int i = 0; i < 10; i++) {
(comb *= fact(cntCnt[i])) %= MOD;
}
(comb *= miCnt) %= MOD;
printf("%lld\n%lld\n", miNum, comb);
return 0;
}

ステータス

項目 データ
問題 0003 - repdigit
ユーザー名 sekiya9311
投稿日時 2017-07-07 22:54:21
言語 C++17
状態 Wrong Answer
得点 0
ソースコード長 3586 Byte
最大実行時間 1000 ms
最大メモリ使用量 4568 KB

セット

セット 得点 Cases
1 ALL 0 / 100 *

テストケース

ファイル名 状態 実行時間 メモリ使用量 #
01_sample1.in AC 16 ms 1248 KB
1
01_sample2.in AC 10 ms 1328 KB
1
01_sample3.in AC 14 ms 1276 KB
1
02_handmake1.in AC 10 ms 1360 KB
1
02_handmake2.in WA 10 ms 1308 KB
1
02_handmake3.in AC 14 ms 1384 KB
1
02_handmake4.in AC 12 ms 1336 KB
1
02_handmake5.in AC 11 ms 1284 KB
1
02_handmake6.in AC 21 ms 1356 KB
1
02_handmake7.in AC 11 ms 1436 KB
1
02_handmake8.in WA 17 ms 1392 KB
1
02_handmake9.in AC 12 ms 1472 KB
1
03_random1.in WA 11 ms 1424 KB
1
03_random2.in WA 10 ms 1372 KB
1
03_random3.in WA 16 ms 1320 KB
1
03_random4.in WA 12 ms 1400 KB
1
03_random5.in WA 17 ms 1356 KB
1
03_random6.in WA 12 ms 1308 KB
1
04_random1.in AC 14 ms 1380 KB
1
04_random2.in AC 13 ms 1324 KB
1
04_random3.in AC 14 ms 1276 KB
1
04_random4.in AC 12 ms 1352 KB
1
04_random5.in AC 13 ms 1424 KB
1
04_random6.in AC 13 ms 1380 KB
1
05_random1.in AC 25 ms 3128 KB
1
05_random2.in AC 24 ms 3172 KB
1
05_random3.in AC 24 ms 3212 KB
1
05_random4.in AC 27 ms 3252 KB
1
06_random1.in AC 25 ms 4568 KB
1
06_random3.in TLE 1000 ms 2952 KB
1