diff --git a/problem/P1855/P1855.cpp b/problem/P1855/P1855.cpp
new file mode 100644
index 00000000..e8e1b880
--- /dev/null
+++ b/problem/P1855/P1855.cpp
@@ -0,0 +1,21 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, m, t, mi[205], ti[205], f[205][205];
+
+int main() {
+    cin >> n >> m >> t;
+    for (int i = 1; i <= n; i++) {
+        cin >> mi[i] >> ti[i];
+    }
+    for (int i = 1; i <= n; i++) {
+        for (int j = m; j >= mi[i]; j--) {
+            for (int k = t; k >= ti[i]; k--) {
+                f[j][k] = max(f[j][k], f[j - mi[i]][k - ti[i]] + 1);
+            }
+        }
+    }
+    cout << f[m][t] << endl;
+    return 0;
+}