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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 |
---|---|---|---|---|---|---|---|---|---|
#384363 | #5356. esperar | nKessi | 17 | 51ms | 17144kb | C++14 | 2.5kb | 2024-04-09 22:19:50 | 2024-04-09 22:19:50 |
Judging History
answer
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#define LL long long
#define pr pair <int, int>
#define mr make_pair
using namespace std;
const int MAXN = 105, Mod = 998244353;
int n, a[MAXN], b[MAXN], DP[MAXN * 35][MAXN * 35], pre[MAXN * 35][MAXN * 35];
map <int, int> mp;
void read(int &x) {
x = 0; bool f = 1; char c = getchar();
for(; c < '0' || c > '9'; c = getchar()) if(c == '-') f = 0;
for(; c >= '0' && c <= '9'; c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
x = (f ? x : -x);
}
LL Qpow(LL x, int y) {
LL ans = 1;
for(; y; y >>= 1) {
if(y & 1) ans = ans * x % Mod;
x = x * x % Mod;
}
return ans;
}
int main() {
read(n);
for(int i = 1; i <= n; i ++) read(a[i]);
for(int i = 1; i <= n; i ++) {
int t = a[i];
for(int j = 2; j * j <= a[i] && j <= t; j ++) {
if(t % j == 0) {
mp[j] = 1;
while(t % j == 0) t /= j;
}
}
if(t > 1) mp[t] = 1;
}
LL ans1 = 1, ans2 = 1;
for(auto i : mp) {
int up = 0; DP[0][0] = 1;
for(int j = 1; j <= n; j ++) {
int t = a[j]; b[j] = 0;
while(t % i.first == 0) t /= i.first, b[j] ++;
up += b[j];
if(b[j] == 0) continue;
// memset(pre, 0, sizeof(pre));
for(int p = 0; p <= up; p ++) {
pre[p][0] = DP[p][0];
for(int q = 1; q <= up; q ++) {
pre[p][q] = (DP[p][q] + pre[p][q - 1]) % Mod;
}
}
for(int p = up; p >= 0; p --) {
for(int q = p; q >= 0; q --) {
DP[p][q] = 0;
for(int k = 0; k <= min(b[j], p); k ++) {
DP[p][q] = DP[p][q] + pre[p - k][q];
if(q - k - 1 >= 0) DP[p][q] = DP[p][q] - pre[p - k][q - k - 1];
// printf("?%d %d %d %d %d?\n", i.first, j, p, q, DP[p][q]);
}
DP[p][q] %= Mod;
}
}
}
LL now = 0, now1 = 0;
for(int j = 0; j <= up; j += 2) now = (now + DP[j][j >> 1]) % Mod;
for(int j = 0; j <= up; j ++) for(int k = 0; k <= up; k ++) now1 = (now1 + DP[j][k]) % Mod;
ans1 = ans1 * now % Mod; ans2 = ans2 * now1 % Mod;
// printf("?%d %d?\n", now, now1);
for(int j = 0; j <= up; j ++) for(int k = 0; k <= up; k ++) DP[j][k] = 0;
}
printf("%lld", ((ans1 + ans2) * Qpow(2, Mod - 2) % Mod + Mod) % Mod);
return 0;
}
/*
g++ -o esperar esperar.cpp -std=c++14 -O2 -fno-ms-extensions -Wconversion -Wshadow
./esperar
*/
详细
Subtask #1:
score: 17
Accepted
Test #1:
score: 17
Accepted
time: 0ms
memory: 5860kb
input:
2 2 3
output:
5
result:
ok single line: '5'
Test #2:
score: 0
Accepted
time: 0ms
memory: 5960kb
input:
4 5 8 8 9
output:
916
result:
ok single line: '916'
Test #3:
score: 0
Accepted
time: 0ms
memory: 5840kb
input:
5 4 8 7 4 10
output:
4939
result:
ok single line: '4939'
Test #4:
score: 0
Accepted
time: 1ms
memory: 6016kb
input:
5 2 7 7 10 10
output:
1125
result:
ok single line: '1125'
Test #5:
score: 0
Accepted
time: 0ms
memory: 5864kb
input:
4 5 5 4 3
output:
84
result:
ok single line: '84'
Test #6:
score: 0
Accepted
time: 0ms
memory: 5828kb
input:
4 5 5 6 4
output:
249
result:
ok single line: '249'
Subtask #2:
score: 0
Wrong Answer
Test #7:
score: 0
Wrong Answer
time: 48ms
memory: 17144kb
input:
100 78125 625 244140625 9765625 390625 9765625 244140625 3125 125 244140625 1 78125 25 48828125 25 3125 15625 9765625 25 125 9765625 1 625 125 244140625 3125 15625 48828125 9765625 1 125 390625 1953125 15625 1 5 9765625 5 48828125 125 9765625 25 5 48828125 390625 25 125 390625 9765625 9765625 625 31...
output:
446501436
result:
wrong answer 1st lines differ - expected: '476416688', found: '446501436'
Subtask #3:
score: 0
Wrong Answer
Test #12:
score: 0
Wrong Answer
time: 51ms
memory: 17144kb
input:
100 78125 625 244140625 9765625 390625 9765625 244140625 3125 125 244140625 1 78125 25 48828125 25 3125 15625 9765625 25 125 9765625 1 625 125 244140625 3125 15625 48828125 9765625 1 125 390625 1953125 15625 1 5 9765625 5 48828125 125 9765625 25 5 48828125 390625 25 125 390625 9765625 9765625 625 31...
output:
446501436
result:
wrong answer 1st lines differ - expected: '476416688', found: '446501436'