AtCoder Regular Contest 004

Submission #1189739

Source codeソースコード

#include <cstdio>

using namespace std;

#define REP(i,n)   for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for(int i=(b); i<=(int)(e); i++)

//------------------------------------------------------------------------------
typedef long long ll;

ll gcd(ll a, ll b) {
  if (b == 0) return a;
  return gcd(b, a % b);
}

//------------------------------------------------------------------------------

ll X;
ll Y;

void solve() {
  ll D = gcd(X, Y);
  X /= D; Y /= D;
  if (Y % 2 == 0) Y /= 2;
  else X *= 2;
  bool found = false;
  ll ki = (X - Y) / (Y * Y);
  ll kx = (X + Y) / (Y * Y);
  for (ll k = ki; k <= kx; k++) {
    ll N = k * Y;
    ll M = (k * (Y * Y) - (X - Y)) * k;
    if (M <= 0 || M % 2 > 0) continue;
    M /= 2;
    printf("%lld %lld\n", N, M);
    found = true;
  }
  if (!found) puts("Impossible");
}

void input() {
  scanf("%lld/%lld", &X, &Y);
}

int main() {
  input();
  solve();
  return 0;
}

Submission

Task問題 C - 平均値太郎の憂鬱 ( The melancholy of Taro Heikinchi )
User nameユーザ名 ねじこ
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 100
Source lengthソースコード長 920 Byte
File nameファイル名
Exec time実行時間 1 ms
Memory usageメモリ使用量 128 KB

Compiler messageコンパイルメッセージ

./Main.cpp: In function ‘void input()’:
./Main.cpp:41:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld/%lld", &X, &Y);
^

Test case

Set

Set name Score得点 / Max score Cases
All 100 / 100 00_killer.txt,00_max.txt,00_min.txt,00_min2.txt,00_sample_01.txt,00_sample_02.txt,00_sample_03.txt,00_sample_04.txt,01_rnd_00.txt,01_rnd_01.txt,01_rnd_02.txt,01_rnd_03.txt,01_rnd_04.txt,01_rnd_05.txt,01_rnd_06.txt,01_rnd_07.txt,01_rnd_08.txt,01_rnd_09.txt,01_rnd_10.txt,01_rnd_11.txt,01_rnd_12.txt,01_rnd_13.txt,01_rnd_14.txt,01_rnd_15.txt,01_rnd_16.txt,01_rnd_17.txt,01_rnd_18.txt,01_rnd_19.txt,02_rnd2_00.txt,02_rnd2_01.txt,02_rnd2_02.txt,02_rnd2_03.txt,02_rnd2_04.txt,02_rnd2_05.txt,02_rnd2_06.txt,02_rnd2_07.txt,02_rnd2_08.txt,02_rnd2_09.txt,02_rnd2_10.txt,02_rnd2_11.txt,02_rnd2_12.txt,02_rnd2_13.txt,02_rnd2_14.txt,02_rnd2_15.txt,02_rnd2_16.txt,02_rnd2_17.txt,02_rnd2_18.txt,02_rnd2_19.txt,03_smallrnd_00.txt,03_smallrnd_01.txt,03_smallrnd_02.txt,03_smallrnd_03.txt,03_smallrnd_04.txt,03_smallrnd_05.txt,03_smallrnd_06.txt,03_smallrnd_07.txt,03_smallrnd_08.txt,03_smallrnd_09.txt,04_primes_01.txt,04_primes_02.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
00_killer.txt AC 1 ms 128 KB
00_max.txt AC 1 ms 128 KB
00_min.txt AC
00_min2.txt AC 1 ms 128 KB
00_sample_01.txt AC 1 ms 128 KB
00_sample_02.txt AC
00_sample_03.txt AC 1 ms 128 KB
00_sample_04.txt AC
01_rnd_00.txt AC
01_rnd_01.txt AC
01_rnd_02.txt AC
01_rnd_03.txt AC 1 ms 128 KB
01_rnd_04.txt AC
01_rnd_05.txt AC 1 ms 128 KB
01_rnd_06.txt AC
01_rnd_07.txt AC
01_rnd_08.txt AC
01_rnd_09.txt AC 1 ms 128 KB
01_rnd_10.txt AC 1 ms 128 KB
01_rnd_11.txt AC 1 ms 128 KB
01_rnd_12.txt AC 1 ms 128 KB
01_rnd_13.txt AC
01_rnd_14.txt AC 1 ms 128 KB
01_rnd_15.txt AC 1 ms 128 KB
01_rnd_16.txt AC 1 ms 128 KB
01_rnd_17.txt AC 1 ms 128 KB
01_rnd_18.txt AC 1 ms 128 KB
01_rnd_19.txt AC 1 ms 128 KB
02_rnd2_00.txt AC
02_rnd2_01.txt AC 1 ms 128 KB
02_rnd2_02.txt AC 1 ms 128 KB
02_rnd2_03.txt AC 1 ms 128 KB
02_rnd2_04.txt AC 1 ms 128 KB
02_rnd2_05.txt AC 1 ms 128 KB
02_rnd2_06.txt AC 1 ms 128 KB
02_rnd2_07.txt AC 1 ms 128 KB
02_rnd2_08.txt AC 1 ms 128 KB
02_rnd2_09.txt AC 1 ms 128 KB
02_rnd2_10.txt AC 1 ms 128 KB
02_rnd2_11.txt AC 1 ms 128 KB
02_rnd2_12.txt AC 1 ms 128 KB
02_rnd2_13.txt AC 1 ms 128 KB
02_rnd2_14.txt AC 1 ms 128 KB
02_rnd2_15.txt AC 1 ms 128 KB
02_rnd2_16.txt AC 1 ms 128 KB
02_rnd2_17.txt AC 1 ms 128 KB
02_rnd2_18.txt AC 1 ms 128 KB
02_rnd2_19.txt AC 1 ms 128 KB
03_smallrnd_00.txt AC 1 ms 128 KB
03_smallrnd_01.txt AC 1 ms 128 KB
03_smallrnd_02.txt AC 1 ms 128 KB
03_smallrnd_03.txt AC 1 ms 128 KB
03_smallrnd_04.txt AC 1 ms 128 KB
03_smallrnd_05.txt AC 1 ms 128 KB
03_smallrnd_06.txt AC 1 ms 128 KB
03_smallrnd_07.txt AC
03_smallrnd_08.txt AC 1 ms 128 KB
03_smallrnd_09.txt AC 1 ms 128 KB
04_primes_01.txt AC
04_primes_02.txt AC 1 ms 128 KB