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OI-codes/AcWing/279/279.cpp

29 lines
421 B
C++

#include <iostream>
using std::cin;
using std::cout;
const char endl = '\n';
const int N = 4005;
const long long mod = 2147483648;
int n;
long long f[N];
int main() {
std::ios::sync_with_stdio(false);
cin >> n;
f[0] = 1;
for (int i = 1; i <= n; i++) {
for (int j = i; j <= n; j++) {
f[j] = (f[j] + f[j - i]) % mod;
}
}
cout << f[n] - 1 << endl;
return 0;
}