Submission #1966897

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
using ll = long long; using pii = pair<int, int>;
#define FOR(i,a,b) for(int (i)=(a);i<(int)(b);i++)
#define rep(i,n) FOR(i,0,n)

int n, p;
int a[55];

ll dp[55][100 * 51];
ll f(int i, int s) {
    ll &r = dp[i][s];
    if (r != -1) return r;
    if (i >= n) return r = s % 2 == p;
    return r = f(i + 1, s) + f(i + 1, s + a[i]);
}

int main() {
    scanf("%d%d", &n, &p);
    rep(i, n) scanf("%d", &a[i]);
    memset(dp, -1, sizeof(dp));
    ll ans = f(0, 0);
    cout << ans << "\n";
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &p);
                          ^
./Main.cpp:20:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     rep(i, n) scanf("%d", &a[i]);
                                 ^

Judge Result