new file: P2613.cpp

P2613.cpp

@@ -0,0 +1,32 @@
+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+const int mod = 19260817;
+signed main() {
+    auto read = [](int &x) {
+        x = 0;
+        char c = getchar();
+        while (c < '0' || c > '9')
+            c = getchar();
+        while (c >= '0' && c <= '9')
+            x = (x * 10 + c - '0') % mod, c = getchar();
+    };
+    auto qpow = [](int a, int b) {
+        a %= mod;
+        int ans = 1;
+        while (b) {
+            if (b & 1)
+                ans = (ans * a) % mod;
+            a = (a * a) % mod;
+            b >>= 1;
+        }
+        return ans;
+    };
+    int a, b;
+    read(a), read(b);
+    if (a == 0 || b == 0)
+        printf("Angry!\n");
+    else
+        printf("%lld\n", (a * qpow(b, mod - 2)) % mod);
+    return 0;
+}