SGU 106 the equation

Sub-situation Discussion

Expand Euclid

The code is changed according to other people's ideas.

1 /*Author:usedrose*/2 /*Created TIME:2015/7/25 14:51:42*/3 /*File name:2.cpp*/4#include <cstdio>5#include <iostream>6#include <algorithm>7#include <sstream>8#include <cstdlib>9#include <cstring>Ten#include <climits> One#include <vector> A#include <string> -#include <ctime> -#include <cmath> the#include <deque> -#include <queue> -#include <stack> -#include <Set> +#include <map> - #defineINF 0x3f3f3f3f + #defineEPS 1e-8 A #definePi ACOs (-1.0) at #defineMAXN 1110 - #defineOK cout << "OK" << Endl; - #defineO (a) cout << #a << "=" << a << Endl - #defineO1 (A, b) cout << #a << "=" << a << "<< #b <<" = "<< b << Endl - using namespacestd; -typedefLong LongLL; in  - voidEXGCD (ll A, ll B, LL &d, LL &x, LL &y) to { +     if(!b) d = A, x =1, y =0; -     Else { theEXGCD (b, a%B, D, y, x); *Y-= x* (A/b); $     }Panax Notoginseng } -  the intMain () + { A     //freopen ("data.in", "R", stdin); the     //freopen ("Data.out", "w", stdout); +Cin.tie (0); -Ios::sync_with_stdio (false); $ LL A, B, C, D, X, Y, x1, x2, y1, y2; $      while(Cin >> a >> b >>c) { -CIN >> x1 >> x2 >> y1 >>Y2; -         if(A = =0|| b = =0) { the             if(A = =0&&b) { -                 if(c%b | | c/b > Y2 | | c/b < y1) cout <<"0"<<Endl;Wuyi                 Elsecout << x2-x1 +1<<Endl; the             } -             Else if(b = =0&&a) { Wu                 if(c%a | | c/a > X1 | | c/b < x1) cout <<"0"<<Endl; -                 Elsecout << Y2-y1 +1<<Endl; About             }  $             Else { -                 if(c) cout <<"0"<<Endl; -                    Elsecout << (x2-x1 +1) * (Y2-y1 +1) <<Endl;  -             } A         } +         Else { the             if(C <0) C =-C; -             ElseA =-A, B =-b; $             if(A <0) { theA =-A; theX1 =-X1; thex2 =-x2; the swap (x1, x2); -             } in             if(b <0) { theb =-b; theY1 =-Y1; Abouty2 =-Y2; the swap (y1, y2); the             } the             if(A <b) EXGCD (b, A, D, y, x); +             ElseEXGCD (A, B, D, X, y); -             if(c%d) { thecout <<"0"<<Endl;Bayi                 Continue; the             } theA/= D, b/= D, c/=D; -             //Small Optimization -              while(x < x1) x + = b, y-=A; the              while(x > x2) x-= b, y + =A; theLL ans =0; the             BOOL inch=false; thex *= C, y *=C; -              while(x <=x2) { the                 if(x >= x1 && x <= x2 && y >= y1 && y <=y2) { the                     inch=true; the                      Break;94                 }     theX + = b, y-=A; the             } the              while(!inch&& x >=x1) {98                 if(x >= x1 && x <= x2 && y >= y1 && y <=y2) {  About                     inch=true; -                      Break;101                 }    102X-= b, y + =A;103             } 104             if(inch) { theAns + = min ((x2-x)/b, (Y-Y1)/a);106Ans + = min ((x-x1)/b, (y2-y)/a);107             }108cout << ans +inch<<Endl;109         } the     }111     return 0; the}

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SGU 106 the equation