C語言中主函數中相關問題？？？

#include?

#include?

#include?

#include?

#include?

#include?

#include?

#include?

#include?

using?namespace?std;

int?mp[20][20],?b[20],?max1,?n;

struct?node

{

int?a[15],?top,?ans,?x;

};

void?bfs()

{

int?i,?j,?x;

queueq;

node?f1,?f2;

f1.top=0;

f1.x=-1;

f1.ans=0;

q.push(f1);

while(!q.empty())

{

f1=q.front();

q.pop();

//printf("%d\n",f1.ans);

if(f1.x==n-1)

{

if(max1

max1=f1.ans;

continue?;

}

for(i=0;i

{

f2.a[i]=f1.a[i];

}

f2.ans=f1.ans;

f2.top=f1.top;

f2.x=f1.x+1;

q.push(f2);

f2.top=f1.top+1;

f2.a[f1.top]=f2.x;

f2.ans=f1.ans+b[f2.x];

for(i=0;i

{

f2.ans=f2.ans+mp[f2.a[i]][f2.x];

}

q.push(f2);

}

}

int?main()

{

int?t,?i,?j;

scanf("%d",&t);

while(t--)

{

scanf("%d",&n);

for(i=0;i

{

scanf("%d",&b[i]);

}

for(i=0;i

{

for(j=0;j