7 solutions
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0
这是一道高精度问题,涉及高位加减法的时候,简单的相加数据会爆掉,所以我们用数组去模拟一位一位的加减法!
#include <bits/stdc++.h> //高精度 using namespace std; const int maxn = 505; int a[maxn], b[maxn], c[maxn]; int main(void) { string aa, bb; cin >> aa >> bb; if (aa.size() < bb.size()) { swap(aa, bb); } int k = aa.size() - bb.size(); for (int i = 0; i < aa.size(); i++) { if (i < k) { a[i] = aa[i] - '0'; b[i] = 0; } else { a[i] = aa[i] - '0'; b[i] = bb[i - k] - '0'; } } int res = 0; for (int i = aa.size() - 1; i >= 0; i--) { c[i] = (a[i] + b[i] + res) % 10; res = (a[i] + b[i] + res) / 10; } if (res) cout << res; for (int i = 0; i < aa.size(); i++) { cout << c[i]; } return 0; }
Information
- ID
- 66
- Time
- 1000ms
- Memory
- 256MiB
- Difficulty
- 8
- Tags
- # Submissions
- 767
- Accepted
- 105
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