'commit'

TangDou/AcWing/HighPrecision/Backup/791_add1.cpp

@@ -0,0 +1,26 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 100010;
+int a[N], al;
+int b[N], bl;
+
+void add(int a[], int &al, int b[], int &bl) {
+    int t = 0;
+    al = max(al, bl);
+    for (int i = 1; i <= al; i++) {
+        t += a[i] + b[i];
+        a[i] = t % 10;
+        t /= 10;
+    }
+    if (t) a[++al] = 1;
+}
+int main() {
+    string x, y;
+    cin >> x >> y;
+    for (int i = x.size() - 1; i >= 0; i--) a[++al] = x[i] - '0';
+    for (int i = y.size() - 1; i >= 0; i--) b[++bl] = y[i] - '0';
+    add(a, al, b, bl);
+    for (int i = al; i; i--) printf("%d", a[i]);
+    return 0;
+}