結果
問題 | No.1179 Quadratic Equation |
ユーザー |
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提出日時 | 2020-08-21 21:42:35 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 3,075 bytes |
コンパイル時間 | 2,614 ms |
コンパイル使用メモリ | 211,212 KB |
最終ジャッジ日時 | 2025-01-13 05:30:27 |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 11 |
ソースコード
#pragma GCC optimize ("Ofast")#include<bits/stdc++.h>using namespace std;inline int my_getchar_unlocked(){static char buf[1048576];static int s = 1048576;static int e = 1048576;if(s == e && e == 1048576){e = fread_unlocked(buf, 1, 1048576, stdin);s = 0;}if(s == e){return EOF;}return buf[s++];}inline void rd(int &x){int k;int m=0;x=0;for(;;){k = my_getchar_unlocked();if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){x=k-'0';break;}}for(;;){k = my_getchar_unlocked();if(k<'0'||k>'9'){break;}x=x*10+k-'0';}if(m){x=-x;}}struct MY_WRITER{char buf[1048576];int s;int e;MY_WRITER(){s = 0;e = 1048576;}~MY_WRITER(){if(s){fwrite_unlocked(buf, 1, s, stdout);}}};MY_WRITER MY_WRITER_VAR;void my_putchar_unlocked(int a){if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){fwrite_unlocked(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout);MY_WRITER_VAR.s = 0;}MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a;}inline void wt_L(char a){my_putchar_unlocked(a);}int WRITER_DOUBLE_DIGIT = 15;inline int writerDigit_double(){return WRITER_DOUBLE_DIGIT;}inline void writerDigit_double(int d){WRITER_DOUBLE_DIGIT = d;}inline void wt_L(double x){const int d = WRITER_DOUBLE_DIGIT;int k;int r;double v;if(x!=x || (x==x+1 && x==2*x)){my_putchar_unlocked('E');my_putchar_unlocked('r');my_putchar_unlocked('r');return;}if(x < 0){my_putchar_unlocked('-');x = -x;}x += 0.5 * pow(0.1, d);r = 0;v = 1;while(x >= 10*v){v *= 10;r++;}while(r >= 0){r--;k = floor(x / v);if(k >= 10){k = 9;}if(k <= -1){k = 0;}x -= k * v;v *= 0.1;my_putchar_unlocked(k + '0');}if(d > 0){my_putchar_unlocked('.');v = 1;for(r=(0);r<(d);r++){v *= 0.1;k = floor(x / v);if(k >= 10){k = 9;}if(k <= -1){k = 0;}x -= k * v;my_putchar_unlocked(k + '0');}}}inline void wt_L(const char c[]){int i=0;for(i=0;c[i]!='\0';i++){my_putchar_unlocked(c[i]);}}int main(){int A;int B;int C;int d;double res1;double res2;rd(A);rd(B);rd(C);d = B*B - 4*A*C;if(d < 0){wt_L("imaginary");wt_L('\n');return 0;}res1 = (- B - sqrt(d)) / (2*A);res2 = (- B + sqrt(d)) / (2*A);if(res1 > res2){swap(res1, res2);};if(d==0){wt_L(res1);wt_L('\n');}if(d>0){wt_L(res1);wt_L(' ');wt_L(res2);wt_L('\n');}return 0;}// cLay varsion 20200813-1 [beta]// --- original code ---// {// int A, B, C;// int d;// double res1, res2;// rd(A, B, C);// d = B*B - 4*A*C;// if(d < 0) wt("imaginary"), return 0;// res1 = (- B - sqrt(d)) / (2*A);// res2 = (- B + sqrt(d)) / (2*A);// sortE(res1, res2);// if(d==0) wt(res1);// if(d>0) wt(res1, res2);// }