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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 |
---|---|---|---|---|---|---|---|---|---|
#760160 | #7954. Special Numbers | LittlePants | WA | 0ms | 3812kb | C++14 | 3.5kb | 2024-11-18 15:14:14 | 2024-11-18 15:14:15 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pii pair<int, int>
#define X first
#define Y second
#define F first
#define S second
#define vi vector<int>
#define SZ(a) ((int)a.size())
#define ALL(v) v.begin(), v.end()
#define pb push_back
#define eb emplace_back
#define push emplace
#define lb(x, v) lower_bound(ALL(x), v)
#define ub(x, v) upper_bound(ALL(x), v)
#define re(x) reverse(ALL(x))
#define uni(x) x.resize(unique(ALL(x)) - x.begin())
#define inf 1000000000
#define INF 1000000000000000000
#define mod 1000000007
#define MOD 998244353
#define get_bit(x, y) ((x>>y)&1)
#define mkp make_pair
#define IO ios_base::sync_with_stdio(0); cin.tie(0);
void abc() {cerr << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
cerr << a << ' ', abc(b...);
}
#ifdef debug
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif
template<class T> bool ckmin(T& a, const T& b) { return b<a ? a=b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a<b ? a=b, 1 : 0; }
const vector<int> prime = {2, 3, 5, 7};
vector<vector<int>> states;
map<pair<int, vector<int>>, ll> dp;
vector<int> fac;
ll goal;
vector<int> add_fac(const vector<int> &cur_fac, int x) {
vector<int> res(5);
if (cur_fac[4] == 1) return cur_fac;
if (x == 0) {
res[4] = 1;
return res;
}
for (int i = 0; i < 4; i++) {
int j = prime[i], cnt = 0;
while (x % j == 0) {
x /= j;
cnt++;
}
res[i] = min(fac[i], cur_fac[i] + cnt);
}
return res;
}
ll dfs(int pos, vector<int> cur_fac, bool lim, bool lead, const vector<int> &num) {
if (pos == -1) return cur_fac[4] == 1 || cur_fac == fac;
if (!lim && !lead && dp.find(mkp(pos, cur_fac)) != dp.end()) return dp[mkp(pos, cur_fac)];
int ub = (lim ? num[pos] : 9);
ll res = 0;
if (lead) res = (res + dfs(pos - 1, cur_fac, 0, 1, num)) % mod;
for (int i = lead; i <= ub; i++) {
auto nxt = add_fac(cur_fac, i);
res = (res + dfs(pos - 1, nxt, lim && i == ub, 0, num)) % mod;
}
if (!lim && !lead) dp[mkp(pos, cur_fac)] = res;
//test(pos, cur_fac[0], res);
return res;
}
ll cal(__int128 x) {
vector<int> num;
int dig_cnt = 0;
while (x) {
num.eb(x % 10); x /= 10;
dig_cnt++;
}
test(dig_cnt);
vector<int> cur_fac(5);
return dfs(dig_cnt - 1, cur_fac, 1, 1, num);
}
void get_allstates(int pos, vector<int> cur = {}) {
if (pos == 4) {
states.eb(cur);
return;
}
for (int i = 0; i <= fac[pos]; i++) {
cur.eb(i);
get_allstates(pos + 1, cur);
cur.pop_back();
}
}
inline void solve() {
ll k;
cin >> k;
string sl, sr;
cin >> sl >> sr;
fac.resize(5, 0);
for (int i = 0; i < 4; i++) {
ll j = prime[i];
while (k % j == 0) {
k /= j;
fac[i]++;
}
}
if (fac[0] + fac[1] + fac[2] + fac[3] == 0) {
fac[4] = -1;
} else {
fac[4] = 0;
}
test(fac[0], fac[1], fac[2], fac[3]);
//get_allstates(0);
//test(SZ(states));
__int128 l = 0, r = 0;
for (int i = 0; i < SZ(sl); i++)
l = l * 10 + (sl[i] - '0');
for (int i = 0; i < SZ(sr); i++)
r = r * 10 + (sr[i] - '0');
//long long lll = l, rrr = r;
//test(lll, rrr);
if (k == 1) {
ll ans = (r - l + 1);
cout << ans << '\n';
} else {
cout << (cal(r) - cal(l - 1) + mod) % mod;
}
//test(cal(r));
//test(cal(l - 1));
}
signed main() {
IO;
solve();
}
详细
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3812kb
input:
5 1 20
output:
20
result:
wrong answer 1st lines differ - expected: '4', found: '20'