結果

問題 No.441 和か積
ユーザー dgd1724
提出日時 2016-11-12 07:05:20
言語 C++11(廃止可能性あり)
(gcc 13.3.0)
結果
AC  
実行時間 2 ms / 1,000 ms
コード長 2,574 bytes
コンパイル時間 1,560 ms
コンパイル使用メモリ 165,800 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-27 03:32:52
合計ジャッジ時間 2,509 ms
ジャッジサーバーID
(参考情報)
judge2 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 30
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
//const static double de_PI = 3.14159265358979323846;
//const static int de_MOD = 1000000007;
//const static int de_MAX = 999999999;
//const static int de_MIN = -999999999;
inline void Erase_LeadingZero(std::string &A) {
if (A.length() <= 18) {
unsigned long long temp = std::stoull(A);
A = std::to_string(temp);
}
else {
std::reverse(A.begin(), A.end());
while (A.back() == '0') { A.pop_back(); }
std::reverse(A.begin(), A.end());
if (A == "") { A = "0"; }
}
}
inline std::string Add_MultiplePrecision(const std::string &str1, const std::string &str2) {
std::string A = str1, B = str2;
int al = A.length(), bl = B.length(), cl = std::max(A.length(), B.length());
std::vector<int> a(cl), b(cl), c(cl + 1);
for (int i = 0; i < al; i++) { a[i] = A[al - 1 - i] - '0'; }
for (int i = 0; i < bl; i++) { b[i] = B[bl - 1 - i] - '0'; }
int carry = 0;
for (int i = 0; i < cl; i++) {
c[i] = (a[i] + b[i] + carry) % 10;
c[i + 1] = carry = (a[i] + b[i] + carry) / 10;
}
std::string ans(cl, 0);
for (int i = 0; i < cl; i++) { ans[cl - i - 1] = static_cast<char>(c[i]) + '0'; }
Erase_LeadingZero(ans);
return(ans);
}
inline std::string Multiply_MultiplePrecision(const std::string &str1, const std::string &str2) {
std::string A = str1, B = str2;
int al = A.length(), bl = B.length(), cl = al + bl;
std::vector<int> a(al), b(bl), c(cl + 1);
for (int i = 0; i < al; i++) { a[i] = A[al - 1 - i] - '0'; }
for (int i = 0; i < bl; i++) { b[i] = B[bl - 1 - i] - '0'; }
for (int i = 0; i < bl; i++) {
for (int j = 0; j < al; j++) { c[i + j] += b[i] * a[j]; }
}
for (int i = 0; i < cl; i++) {
c[i + 1] += c[i] / 10;
c[i] = c[i] % 10;
}
std::string ans(cl, 0);
for (int i = 0; i < cl; i++) { ans[cl - i - 1] = static_cast<char>(c[i]) + '0'; }
Erase_LeadingZero(ans);
return(ans);
}
inline bool Compare_MultiplePrecision(const std::string &A, const std::string &B) {
if (A == B) { return true; }
if (A.length() > B.length()) { return true; }
else if (A.length() < B.length()) { return false; }
else {
unsigned int i = 0;
while (A[i] == B[i]) { i++; }
if (A[i] > B[i]) { return true; }
else { return false; }
}
}
int main(void) {
//std::ifstream inf("123.txt"); std::cin.rdbuf(inf.rdbuf());
std::string A, B, S, P;
std::cin >> A >> B;
S = Add_MultiplePrecision(A, B);
P = Multiply_MultiplePrecision(A, B);
if (S == P) { std::cout << "E" << std::endl; }
else {
if (Compare_MultiplePrecision(S, P)) { std::cout << "S" << std::endl; }
else { std::cout << "P" << std::endl; }
}
}
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