这样暴力有什么问题

KK爱搞机 @ 2016-11-05 11:20:33

#include<iostream>
#include<cstring>
using namespace std;
int num[10000001],a,b,c,flag=0;
int main(){
    cin>>a>>b>>c;
    for(int n1=1;n1<=9;n1++)
    for(int n2=1;n2<=9;n2++)
    for(int n3=1;n3<=9;n3++)
    for(int n4=1;n4<=9;n4++)
    for(int n5=1;n5<=9;n5++)
    for(int n6=1;n6<=9;n6++)
    for(int n7=1;n7<=9;n7++)
    for(int n8=1;n8<=9;n8++)
    for(int n9=1;n9<=9;n9++)
    if(n1!=n2&&n1!=n3&&n1!=n4&&n1!=n5&&n1!=n6&&n1!=n7&&n1!=n8&&n1!=n9
    &&n2!=n3&&n2!=n4&&n2!=n5&&n2!=n6&&n2!=n7&&n2!=n8&&n2!=n9
    &&n3!=n4&&n3!=n5&&n3!=n6&&n3!=n7&&n3!=n8&&n3!=n9
    &&n4!=n5&&n4!=n6&&n4!=n7&&n4!=n8&&n4!=n9
    &&n5!=n6&&n5!=n7&&n5!=n8&&n5!=n9
    &&n6!=n7&&n6!=n8&&n6!=n9
    &&n7!=n8&&n7!=n9
    &&n8!=n9
    &&(n1*100+n2*10+n3)/a==(n4*100+n5*10+n6)/b==(n7*100+n8*10+n9)/c){
        cout<<n1*100+n2*10+n3<<" "<<(n4*100+n5*10+n6)<<" "<<(n7*100+n8*10+n9)<<endl;
        flag=1;
    }
    if(flag==0)cout<<"No!!!";
    return 0;
}

by __世界第一弱__ @ 2016-11-05 11:50:38

帮你加O3（滑稽）

#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
using namespace std;
#define reg register
#define For(a,b,c) for(reg int a=b;i<=c;i++)
#define O(x) __attribute__((optimize("-O"#x)))
#define inline O(3)
int a,b,c,flag=0;
inline int main() {
    cin>>a>>b>>c;
    for(int n1=1; n1<=9; n1++)
        for(int n2=1; n2<=9; n2++)
            for(int n3=1; n3<=9; n3++)
                for(int n4=1; n4<=9; n4++)
                    for(int n5=1; n5<=9; n5++)
                        for(int n6=1; n6<=9; n6++)
                            for(int n7=1; n7<=9; n7++)
                                for(int n8=1; n8<=9; n8++)
                                    for(int n9=1; n9<=9; n9++)
                                        if(n1!=n2&&n1!=n3&&n1!=n4&&n1!=n5&&n1!=n6&&n1!=n7&&n1!=n8&&n1!=n9
                                                &&n2!=n3&&n2!=n4&&n2!=n5&&n2!=n6&&n2!=n7&&n2!=n8&&n2!=n9
                                                &&n3!=n4&&n3!=n5&&n3!=n6&&n3!=n7&&n3!=n8&&n3!=n9
                                                &&n4!=n5&&n4!=n6&&n4!=n7&&n4!=n8&&n4!=n9
                                                &&n5!=n6&&n5!=n7&&n5!=n8&&n5!=n9
                                                &&n6!=n7&&n6!=n8&&n6!=n9
                                                &&n7!=n8&&n7!=n9
                                                &&n8!=n9
                                                &&(n1*100+n2*10+n3)/a==(n4*100+n5*10+n6)/b==(n7*100+n8*10+n9)/c) {
                                            cout<<n1*100+n2*10+n3<<" "<<(n4*100+n5*10+n6)<<" "<<(n7*100+n8*10+n9)<<endl;
                                            flag=1;
                                        }
    if(flag==0)cout<<"No!!!";
    return 0;
}

by Lolierl @ 2016-11-05 18:05:44

@KK爱搞机

把循环下限设为上一个变量+1，就不用if了

by KK爱搞机 @ 2016-11-05 23:08:04

谢谢