40分求助

danaqi_ @ 2024-03-05 19:30:45

#include<cstdio>
#include<iostream>
#include<cstring>
#include<string>
#include<cmath>
#include<algorithm>
using namespace std;
int sum;
int main(){
    int x,y,z,a,b,c,j,k,l,A,B,C;
    scanf("%d%d%d",&A,&B,&C);
    for(int i=123;i<=999;++i){
        x=i/100;
        y=i/10%10;
        z=i%10;
        a=i*2/100;
        b=i*2/10%10;
        c=i*2%10;
        j=i*3/100;
        k=i*3/10%10;
        l=i*3%10;
        if(x+y+z+a+b+c+j+k+l==1+2+3+4+5+6+7+8+9&&x*y*z*a*b*c*j*k*l==A*B*C*(A*2)*(B*2)*(C*2)*(A*3)*(B*3)*(C*3)){
            printf("%d %d %d\n",i*A,i*B,i*C);
            ++sum;
        }   
    }
    if(sum==0)
        printf("No!!!");
    return 0;
}

by Ravener @ 2024-03-05 20:35:34

前面 x\times y\times z\times a\times b\times c\times j\times k\times l固定等于362800，后面的 A\times B\times C\times (A\times 2)\times (B\times 2)\times (C\times 2)\times (A\times 3)\times (B\times 3)\times (C\times 3)并不固定

by danaqi_ @ 2024-03-06 18:12:38

@Ravener
emmmmm 那该怎么办呢

by danaqi_ @ 2024-03-06 18:17:19

@Ravener
不对啊 前面的为什么是固定的？

by Ravener @ 2024-03-06 19:36:12

依题意，x,y,z,a,b,c,j,k,l对应1~9，所以乘积固定

by danaqi_ @ 2024-03-09 10:01:27

@Ravener

#include<cstdio>
#include<iostream>
#include<cstring>
#include<string>
#include<cmath>
#include<algorithm>
using namespace std;
int sum;
int main(){
    int x,y,z,a,b,c,j,k,l,A,B,C;
    //freopen("三连击（升级）.in","r",stdin);
    //freopen("三连击（升级）.out","w",stdout);
    scanf("%d%d%d",&A,&B,&C);
    for(int i=123;i<=999;++i){
        x=i/100;
        y=i/10%10;
        z=i%10;
        a=i*2/100;
        b=i*2/10%10;
        c=i*2%10;
        j=i*3/100;
        k=i*3/10%10;
        l=i*3%10;
        if(x+y+z+a+b+c+j+k+l==1+2+3+4+5+6+7+8+9&&x*y*z*a*b*c*j*k*l==1*2*3*4*5*6*7*8*9){
            printf("%d %d %d\n",i*A,i*B,i*C);
            ++sum;
        }   
    }
    if(sum==0)
        printf("No!!!");
    //fclose(stdin);
    //fclose(stdout);
    return 0;
}

我就是因为这样做得了20分 才那样做的

by Ravener @ 2024-03-10 21:36:29

你定义 x,y,z,a,b,c,j,k,l的方式是不是有点问题
是不是应该改成这样

x=i*A/100;
y=i*A/10%10;
z=i*A%10;
a=i*B/100;
b=i*B/10%10;
c=i*B%10;
j=i*C/100;
k=i*C/10%10;
l=i*C%10;

by Ravener @ 2024-03-10 21:50:25

你下面那个代码改了之后能拿80分
剩下的20分需要特判A=123,B=456,C=789的情况
(话说这玩意能撤回吗

by Ravener @ 2024-03-10 21:51:06

@danaqi_

by danaqi_ @ 2024-03-11 19:29:21

@Ravener
谢谢 终于改对了