Submission #58818

#	Time	Username	Problem	Language	Result	Execution time	Memory
58818		sansae	물통 (KOI17_bucket)	C++14	57 / 100	4 ms	840 KiB

bucket

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <iostream>
#include <deque>
#include <algorithm>
#include <functional>

using namespace std;

int gcd(int a, int b){
    if(a==0){
        return b;
    }
    else if(b==0){
        return a;
    }
    else{
        return a<b ? gcd(a, b%a) : gcd(b, a%b);
    }
}

int main(void){
    int a, b, c, d;
    scanf("%d %d %d %d", &a, &b, &c, &d);
    if(c!=0 && d!=0 && c!=a && d!=b){
        printf("-1");
        return 0;
    }
    else{
        int g=gcd(a, b);
        if(c%g!=0 || d%g!=0){
            printf("-1");
            return 0;
        }
        else{
            c/=g;
            d/=g;
            a/=g;
            b/=g;
            if(c==0 && d==0){
                printf("0");
                return 0;
            }
            else if(c==a && d==0){
                printf("1");
                return 0;
            }
            else if(c==0 && d==b){
                printf("1");
                return 0;
            }
            else if(c==a && d==b){
                printf("2");
                return 0;
            }
            else{
                int e;
                if(c!=0 && c!=a){
                    e=c;
                }
                if(d!=0 && d!=b){
                    e=d;
                }
                int aa, bb;
                int ans1=0;
                int ans2=0;
                aa=0;
                bb=0;
                while(aa!=e && bb!=e){
                    if(aa==0){
                        aa=a;
                        ans1++;
                    }
                    else if(aa==a){
                        if(aa+bb>=b){
                            aa=aa+bb-b;
                            bb=b;
                        }
                        else{
                            aa=0;
                            bb+=a;
                        }
                        ans1++;
                    }
                    else if(bb==b){
                        bb=0;
                        ans1++;
                    }
                    else{
                        bb=aa;
                        aa=0;
                        ans1++;
                    }
                }
                if(aa==e){
                    if(c==e){
                        if(bb!=d){
                            ans1++;
                        }
                    }
                    else if(d==e){
                        if(bb!=0){
                            ans1++;
                        }
                        ans1++;
                        if(c!=0){
                            ans1++;
                        }
                    }
                }
                else if(bb==e){
                    if(c==e){
                        if(aa!=0){
                            ans1++;
                        }
                        ans1++;
                        if(d!=0){
                            ans1++;
                        }
                        if(aa==0 && d==0){
                            ans1--;
                        }
                    }
                    else if(d==e){
                        if(aa!=c){
                            ans1++;
                        }
                    }
                }
                aa=0;
                bb=0;
                while(aa!=e && bb!=e){
                    if(bb==0){
                        bb=b;
                        ans2++;
                    }
                    else if(aa==a){
                        aa=0;
                        ans2++;
                    }
                    else if(aa==0){
                        if(bb<=a){
                            aa=bb;
                            bb=0;
                            ans2++;
                        }
                        else{
                            bb=bb+aa-a;
                            aa=a;
                            ans2++;
                        }
                    }
                    else{
                        bb=bb+aa-a;
                        aa=a;
                        ans2++;
                    }
                }
                if(aa==e){
                    if(c==e){
                        if(bb!=d){
                            ans2++;
                        }
                    }
                    else if(d==e){
                        if(bb==0&&c==0){
                            ans2++;
                        }
                        else if(bb==b && c==0){
                            ans2+=2;
                        }
                        else if(bb==0 && c==a){
                            ans2+=2;
                        }
                        else{
                            ans2+=3;
                        }
                    }
                }
                else if(bb==e){
                    if(c==e){
                        if(aa==0 && d==0){
                            ans2++;
                        }
                        else if(aa==0 && d==b){
                            ans2+=2;
                        }
                        else if(aa==a && d==0){
                            ans2+=2;
                        }
                        else{
                            ans2+=2;
                        }
                    }
                    else if(d==e){
                        if(aa!=c){
                            ans2++;
                        }
                    }
                }
                printf("%d", min(ans1, ans2));
            }

        }
    }
}

Compilation message (stderr)

bucket.cpp: In function 'int main()':
bucket.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d %d", &a, &b, &c, &d);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bucket.cpp:165:17: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized]
                 if(aa==e){
                 ^~

• Subtask 1: 9 / 9
• Subtask 2: 14 / 14
• Subtask 3: 34 / 34
• Subtask 4: 0 / 43