全紫！！！求助！

sizhenhualei @ 2024-07-17 10:27:34

#include<bits/stdc++.h>
using namespace std;
bool b[300],d[300],c[300];
int sum=0,a[300],x;
int search(int);
void print();

void print()
{
    int i;
    sum++;
    if(sum<=3){
    for (i=1;i<=x;i++)                                    
      cout<<a[i]<<" ";
    cout<<endl; 
    }
}

int search(int i){
    int j;
    for (j=1;j<=x;j++)//i行j个
    if((!b[j])&&(!c[i+j])&&(!d[i-j+30])){
        a[i]=j;
        b[j]=1;
        c[i+j]=1;
        d[i-j+30]=1;
        if(i==x) print();
        else search(i+1);
        b[j]=0;
        c[i+j]=0;
        d[i-j+30]=0;
    }
}

int main(){
    cin>>x;
    search(1);
    cout<<sum;
    return 0;
}

by Im_Joker @ 2024-07-17 10:30:37

#include<bits/stdc++.h>
using namespace std;
bool b[300],d[300],c[300];
int sum=0,a[300],x;

void print()
{
    int i;
    sum++;
    if(sum<=3){
    for (i=1;i<=x;i++)                                    
      cout<<a[i]<<" ";
    cout<<endl; 
    }
}

void search(int i){
    int j;
    for (j=1;j<=x;j++)//i行j个
    if((!b[j])&&(!c[i+j])&&(!d[i-j+30])){
        a[i]=j;
        b[j]=1;
        c[i+j]=1;
        d[i-j+30]=1;
        if(i==x) print();
        else search(i+1);
        b[j]=0;
        c[i+j]=0;
        d[i-j+30]=0;
    }
}

int main(){
    cin>>x;
    search(1);
    cout<<sum;
    return 0;
}

by Zivsfamily @ 2024-07-18 17:59:05

关于int类型函数没有返回值这件事