range queries and one graph

CSES - CSES Problem Set/Dynamic_Programming/Minimizing_Coins.cpp

@@ -0,0 +1,23 @@
+//  Minimizing Coins
+
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int n, x;
+    cin >> n >> x;
+    vector<int> dp(x + 1, INT_MAX - 5);
+    dp[0] = 0;
+    for (int i{}; i < n; i++) {
+        int c; cin >> c;
+        for (int j = c; j <= x; j++) {
+            if (j >= c) {
+                dp[j] = min(dp[j - c] + 1, dp[j]);
+            }
+        }
+    }
+    if (dp[x] != INT_MAX - 5) cout << dp[x] << endl;
+    else cout << -1 << endl;
+    return 0;
+}