'commit'

TangDou/AcWing/HighPrecision/794_div_int.cpp

@@ -0,0 +1,32 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+const int N = 1e5 + 10;
+int a[N], al, r;
+void div(int a[], int &al, int b, int &r) {
+    r = 0;
+    for (int i = al - 1; i >= 0; i--) {
+        r = r * 10 + a[i];
+        a[i] = r / b;
+        r %= b;
+    }
+    // 去前导0
+    while (al > 0 && !a[al]) al--;
+}
+
+int main() {
+    string x;
+    int y;
+
+    cin >> x >> y;
+
+    for (int i = x.size() - 1; i >= 0; i--) a[al++] = x[i] - '0';
+    // 高精度除法
+    div(a, al, y, r);
+
+    // 输出
+    for (int i = al; i >= 0; i--) printf("%d", a[i]);
+    puts("");
+    printf("%d\n", r);
+    return 0;
+}