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P1164 小A点菜

R40041942
This commit is contained in:
Baoshuo Ren 2020-10-18 15:58:38 +08:00 committed by Baoshuo Ren
parent 41988fc322
commit 3384d136de
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68

26
problem/P1164/P1164.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int main() {
int n, m, a[10005], f[10005][10005];
cin >> n >> m;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (j == a[i]) {
f[i][j] = f[i - 1][j] + 1;
}
if (j > a[i]) {
f[i][j] = f[i - 1][j] + f[i - 1][j - a[i]];
}
if (j < a[i]) {
f[i][j] = f[i - 1][j];
}
}
}
cout << f[n][m] << endl;
return 0;
}