1 files changed, 20 insertions, 0 deletions
diff --git a/contests/filtrationContest/I/main.cpp b/contests/filtrationContest/I/main.cpp
new file mode 100644
index 0000000..e0ab17a
--- /dev/null
+++ b/contests/filtrationContest/I/main.cpp
@@ -0,0 +1,20 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+  int n, k;
+  cin >> n >> k;
+  vector<int> v(n);
+  for(auto &x : v) cin >> x;
+  vector<long long> dp(n);
+  for (int i = 0; i < k; i++) {
+    dp[0] += v[i];
+  }
+  for (int i = 1; i <= n - k; i++) {
+    dp[i] = dp[i - 1] + v[i + k - 1] - v[i - 1];
+  }
+  cout << min_element(dp.begin(), dp.end() - k + 1) - dp.begin() + 1 << endl;
+}