#802730 (C++17) No.2086 A+B問題

• 問題: No.2086 A+B問題
• ユーザー: KKT89
• 提出日時: 2022-09-30 21:38:26
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 2 ms / 2,000 ms
• コード長: 5,361 bytes
• コンパイル時間: 2,093 ms
• コンパイル使用メモリ: 144,772 KB
• 実行使用メモリ: 6,944 KB
• 最終ジャッジ日時: 2024-06-02 05:10:43
• 合計ジャッジ時間: 2,791 ms
• ジャッジサーバーID （参考情報）: judge4 / judge2

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 6,812 KB
testcase_01	AC	2 ms; 6,944 KB
testcase_02	AC	2 ms; 6,940 KB
testcase_03	AC	2 ms; 6,940 KB
testcase_04	AC	1 ms; 6,940 KB
testcase_05	AC	2 ms; 6,940 KB
testcase_06	AC	1 ms; 6,944 KB
testcase_07	AC	2 ms; 6,940 KB
testcase_08	AC	2 ms; 6,940 KB
testcase_09	AC	1 ms; 6,944 KB
testcase_10	AC	2 ms; 6,944 KB
testcase_11	AC	1 ms; 6,944 KB
testcase_12	AC	2 ms; 6,940 KB
testcase_13	AC	2 ms; 6,944 KB
testcase_14	AC	2 ms; 6,944 KB
testcase_15	AC	1 ms; 6,944 KB
testcase_16	AC	2 ms; 6,940 KB
testcase_17	AC	1 ms; 6,940 KB
testcase_18	AC	2 ms; 6,940 KB
testcase_19	AC	1 ms; 6,940 KB
testcase_20	AC	1 ms; 6,940 KB

ソースコード

#pragma GCC optimize("Ofast")
#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <cstdio>
#include <ctime>
#include <assert.h>
#include <chrono>
#include <random>
#include <numeric>
#include <set>
#include <deque>
#include <stack>
#include <sstream>
#include <utility>
#include <cstring>
#include <unordered_map>
#include <unordered_set>
#include <tuple>
#include <array>
#include <bitset>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
    return (ull)rng() % B;
}
inline double time() {
    return static_cast<long double>(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count()) * 1e-9;
}

// 参考：
// https://awakia-n.hatenablog.com/entry/20100515/1273922367
// 今後参考にしたい：
// https://drive.google.com/file/d/15_gwYirAxwjbTMEq5MXaPEZAlzkbZfia/view
struct BigInt{
    vector<int> d;
    bool minus = false; 
    BigInt& normalize(){
        int i = (int)d.size() - 1;
        while(i>=0 and d[i] == 0)--i;
        d.resize(i+1);
        if((int)d.size() == 0) {
            d.emplace_back(0);
            minus = false;
        }
        return *this;
    }
    int size(){
        return d.size();
    }
    BigInt(ll _x = 0){
        if(_x < 0){
            minus = true;
            _x = -_x;
        }
        while(_x){
            d.emplace_back(_x%10);
            _x /= 10;
        }
        if(d.size() == 0){
            d.emplace_back(0);
        }
    }
    BigInt(string _x){
        for(char &c:_x){
            if(c == '-'){
                minus = true;
            }
            else{
                d.emplace_back(c-'0');
            }
        }
        reverse(d.begin(), d.end());
        normalize();
    }
    BigInt& operator = (const BigInt& x);
    BigInt& operator = (const ll& x);
    BigInt& operator = (const string& x);
    const bool operator < (const BigInt& x) const;
    const bool operator > (const BigInt& x) const;
    const bool operator <= (const BigInt& x) const;
    const bool operator >= (const BigInt& x) const;
    const bool operator != (const BigInt& x) const;
    const bool operator == (const BigInt& x) const;
    BigInt operator -() const;
    BigInt& operator += (const BigInt& x);
    BigInt& operator -= (const BigInt& x);
    const BigInt operator + (const BigInt& x) const;
    const BigInt operator - (const BigInt& x) const;
    friend istream& operator >> (istream& is, BigInt& x);
    friend ostream& operator << (ostream& os, const BigInt& x);
    friend const BigInt abs(BigInt x);
};

BigInt& BigInt::operator = (const BigInt& x){
    minus = x.minus;
    d = x.d;
    return *this;
}

BigInt& BigInt::operator = (const ll& x){
    return *this = BigInt(x);
}

BigInt& BigInt::operator = (const string& x){
    return *this = BigInt(x);
}

const bool BigInt::operator < (const BigInt& x) const{
    if(minus != x.minus) return (minus ? true : false);
    if(d.size() != x.d.size()) return (d.size() < x.d.size()) ^ minus;
    for (int i = (int)d.size()-1; i >= 0; --i){
        if(d[i] != x.d[i]) return (d[i] < x.d[i]) ^ minus;
    }
    return false;
}

const bool BigInt::operator > (const BigInt& x) const{return x<(*this);}
const bool BigInt::operator <= (const BigInt& x) const{return !(x<(*this));}
const bool BigInt::operator >= (const BigInt& x) const{return !(x>(*this));}
const bool BigInt::operator != (const BigInt& x) const{return (*this)<x || x<(*this);}
const bool BigInt::operator == (const BigInt& x) const{return !((*this)<x || x<(*this));}

BigInt BigInt::operator -() const{
    BigInt res(*this);
    res.minus = !res.minus;
    return res;
}

BigInt& BigInt::operator += (const BigInt& x){
    if(minus != x.minus) return *this -= -x;
    if(d.size() < x.d.size()) d.resize(x.d.size());
    int tmp = 0;
    for (int i = 0; i < (int)d.size(); ++i) {
        d[i] += (i < (int)x.d.size() ? x.d[i] : 0) + tmp;
        if(d[i] >= 10){
            tmp = 1;
            d[i] -= 10;
        }
        else tmp = 0;
    }
    if(tmp) d.emplace_back(1);
    return *this;
}

BigInt& BigInt::operator -= (const BigInt& x){
    if(minus != x.minus) return *this += -x;
    vector<int> dd(x.d);
    if(((*this)<x) ^ minus){
        swap(d,dd);
        minus = !minus;
    }
    int tmp = 0;
    for (int i = 0; i < (int)d.size(); ++i) {
        d[i] -= (i < (int)dd.size() ? dd[i] : 0) + tmp;
        if(d[i] < 0){
            d[i] += 10;
            tmp = 1;
        }
        else{
            tmp = 0;
        }
    }
    return this->normalize();
}

const BigInt BigInt::operator + (const BigInt& x) const{
    BigInt res(*this); return res += x;
}
const BigInt BigInt::operator - (const BigInt& x) const{
    BigInt res(*this); return res -= x;
}

istream& operator >> (istream& is, BigInt& x){
    string s; is >> s;
    x = BigInt(s);
    return is;
}

ostream& operator << (ostream& os, const BigInt& x){
    if(x.minus) os << '-';
    int N = x.d.size();
    for (int i = N-1; i >= 0; --i){
        os << x.d[i];
    }
    return os;
}

const BigInt abs(BigInt x){
    x.minus = false;
    return x;
}

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    BigInt A,B; cin >> A >> B;
    A += B;
    cout << A << endl;
}