#include <bits/stdc++.h>
using namespace std;
long long a[201010];
int main() {
  long long n, m, k;
  while (~scanf("%lld%lld%lld", &n, &m, &k)) {
    memset(a, 0, sizeof(a));
    long long i, j, ans = 0, sum = k;
    for (i = 1; i <= n; i++) scanf("%lld", &a[i]);
    for (i = n; i >= 1; i--) {
      if (a[i] > k) continue;
      if (a[i] <= sum) {
        sum -= a[i];
        ans++;
      } else {
        m--;
        if (m <= 0) break;
        sum = k;
        i++;
      }
    }
    printf("%lld\n", ans);
  }
  return 0;
}
