CF294B Shaass and Bookshelf

R73175686

Luogu/CF294B/CF294B.cpp

@@ -0,0 +1,39 @@
+#include <cstring>
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 105;
+
+int n, v[N], w[N], f[N * N], sum, ans;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        cin >> v[i] >> w[i];
+        sum += v[i];
+    }
+
+    memset(f, 0x3f, sizeof(f));
+    f[0] = 0;
+    for (int i = 1; i <= n; i++) {
+        for (int j = sum; j >= v[i]; j--) {
+            f[j] = std::min(f[j], f[j - v[i]] + w[i]);
+        }
+    }
+
+    for (int i = sum; i >= 0; i--) {
+        if (f[i] <= sum - i) {
+            ans = sum - i;
+            break;
+        }
+    }
+
+    cout << ans << endl;
+
+    return 0;
+}