add ucpc2026-B and ucpc2026-F and complete 1379.rs

storage/contest/cpp/ucpc2026-F.cpp

@@ -0,0 +1,50 @@
+#include <algorithm>
+#include <iostream>
+#include <vector>
+
+#define let auto
+#define fn auto
+#define usize size_t
+using namespace std;
+
+fn fastio() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+}
+
+fn main() -> int {
+    fastio();
+    usize n, q;
+
+    cin >> n >> q;
+    let a = vector<usize>(n);
+    let b = vector<usize>(n);
+
+    for (usize i = 0; i < n; i++) {
+        cin >> a[i];
+    }
+    for (usize i = 0; i < n; i++) {
+        cin >> b[i];
+    }
+    for (usize i = 0; i < q; i++) {
+        usize l, r, k;
+        cin >> l >> r >> k;
+        l -= 1;
+        k -= 1;
+        r -= 1;
+        let x = k - l;
+        
+        let w1 = a[x + l];
+        let w2 = b[x + l];
+        let wo1 = a[r - x];
+        let wo2 = b[r - x];
+
+        if (x == 0) {
+            cout << "(" << "\n";
+        } else if (x == r - l) {
+            cout << ")" << "\n";
+        } else {
+            if (w1 + wo2 > w2 + wo2)
+        }
+    }
+}