#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include #pragma warning(disable:4996) typedef long long ll; typedef unsigned long long ull; #define MIN(a, b) ((a)>(b)? (b): (a)) #define MAX(a, b) ((a)<(b)? (b): (a)) #define LINF 9223300000000000000 #define LINF2 1223300000000000000 #define INF 2140000000 const long long MOD = 1000000007; //const long long MOD = 998244353; using namespace std; void solve() { int n, K; scanf("%d%d", &n, &K); vector a(n); int i; for (i = 0; i < n; i++) { scanf("%d", &a[i]); } sort(a.rbegin(), a.rend()); ll s = 0; for (i = 0; i < K; i++) { if (a[i] >= 0) s += a[i]; } printf("%lld\n", s); return; } int main(int argc, char* argv[]) { #if 1 solve(); #else int T; scanf("%d", &T); int t; for(t=0; t