'commit'

TangDou/CSP-J/J2-2022/pow.cpp

@@ -0,0 +1,26 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+typedef long long LL;
+int main() {
+    
+    freopen("pow.in", "r", stdin);
+    freopen("pow.out", "w", stdout);
+
+    LL a, b, res = 1;
+    cin >> a >> b;
+    //需要对a==1进行特判，否则肯定会TLE一个点,为啥呢？因为b的范围！它是<=1e9!如果a是1，会空跑1e9次！
+    if (a == 1) {
+        printf("%d\n", 1);
+        exit(0);
+    }
+    for (LL i = 1; i <= b; i++) {
+        res *= a;
+        if (res > 1e9) {
+            printf("%d\n", -1);
+            exit(0);
+        }
+    }
+    printf("%lld\n", res);
+    return 0;
+}