151 lines
2.9 KiB
C++
151 lines
2.9 KiB
C++
/* Problem URL: https://codeforces.com/contest/543/problem/A */
|
|
|
|
#include <bits/stdc++.h>
|
|
#include <ext/pb_ds/assoc_container.hpp>
|
|
#include <ext/pb_ds/tree_policy.hpp>
|
|
|
|
using namespace std;
|
|
using namespace __gnu_pbds;
|
|
|
|
template <class T, class comp = less<>>
|
|
using ordered_set = tree<T, null_type , comp , rb_tree_tag , tree_order_statistics_node_update>;
|
|
|
|
#define V vector
|
|
|
|
#define rmin(a, b) a = min(a, b)
|
|
#define rmax(a, b) a = max(a, b)
|
|
|
|
#define rep(i, lim) for (int i = 0; i < (lim); i++)
|
|
#define nrep(i, s, lim) for (int i = s; i < (lim); i++)
|
|
|
|
#define repv(i, v) for (auto &i : (v))
|
|
#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
|
|
#define sortv(v) sort(v.begin(), v.end())
|
|
#define all(v) (v).begin(), (v).end()
|
|
|
|
using vi = vector<int>;
|
|
using vvi = vector<vi>;
|
|
using vvvi = vector<vvi>;
|
|
using vvvvi = vector<vvvi>;
|
|
|
|
using ll = long long;
|
|
|
|
using vl = vector<ll>;
|
|
using vvl = vector<vl>;
|
|
using vvvl = vector<vvl>;
|
|
using vvvvl = vector<vvvl>;
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
|
|
os << vec[0];
|
|
for (size_t i = 1; i < vec.size(); i++) {
|
|
os << ' ' << vec[i];
|
|
}
|
|
os << '\n';
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<v> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
is >> i;
|
|
}
|
|
return is;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
|
|
for (auto &i : vec) {
|
|
os << i[0];
|
|
for (size_t j = 1; j < i.size(); j++) {
|
|
os << ' ' << i[j];
|
|
}
|
|
os << '\n';
|
|
}
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
for (auto &j : i) {
|
|
is >> j;
|
|
}
|
|
}
|
|
return is;
|
|
}
|
|
|
|
const int oo = INT32_MAX >> 1;
|
|
const ll OO = INT64_MAX >> 1;
|
|
|
|
|
|
void pre()
|
|
{
|
|
|
|
}
|
|
|
|
#define TEST 0
|
|
|
|
void solve()
|
|
{
|
|
int n, m, b;
|
|
ll mod;
|
|
cin >> n >> m >> b >> mod;
|
|
|
|
vi a(n);
|
|
cin >> a;
|
|
|
|
// vvvl dp(n + 1, vvl(m + 1, vl(b + 1)));
|
|
// dp[0][0][0] = 1;
|
|
//
|
|
// nrep(i, 1, n + 1) {
|
|
// int now = a[i - 1];
|
|
//
|
|
// rep(j, m + 1) {
|
|
// nrep(k, j, m + 1) {
|
|
// nrep(l, now * j, b + 1) {
|
|
// dp[i][k][l] += dp[i - 1][k - j][l - now * j];
|
|
// dp[i][k][l] %= mod;
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
|
|
|
|
vvl dp(m + 1, vl(b + 1));
|
|
dp[0][0] = 1;
|
|
|
|
nrep(i, 1, n + 1) {
|
|
int now = a[i - 1];
|
|
|
|
rep(j, m) {
|
|
rep(l, b + 1 - now) {
|
|
dp[j + 1][l + now] += dp[j][l];
|
|
dp[j + 1][l + now] %= mod;
|
|
}
|
|
}
|
|
}
|
|
|
|
ll ans = 0;
|
|
rep(i, b + 1) {
|
|
ans += dp[m][i];
|
|
ans %= mod;
|
|
}
|
|
|
|
cout << ans << '\n';
|
|
}
|
|
|
|
int main()
|
|
{
|
|
ios::sync_with_stdio(false);
|
|
cin.tie(nullptr);
|
|
|
|
pre();
|
|
|
|
int t;
|
|
(TEST && cin >> t) || (t = 1);
|
|
while (t--) {
|
|
solve();
|
|
}
|
|
}
|