int maxSum(TreeNode *root, int *maxChild) {
int lm = 0;
int rm = 0;
*maxChild = 0;
if (!root) return 0;
int left = maxSum(root->left, &lm);
int right = maxSum(root->right, &rm);
int a = max(lm, rm);
*maxChild = root->val;
if (a > 0)
*maxChild += a;
a = 0;
if (lm > 0)
a += lm;
if (rm > 0)
a += rm;
a += root->val;
if (root->left)
a = max(a, left);
if (root->right)
a = max(a, right);
return a;
}
int maxSum(struct node* root, int* max)
{
if(root == NULL)
return 0;
int sum = maxSum(root->left, max) + maxSum(root->right, max) + root->data;
if(sum > *max)
*max = sum;
return sum;
}
int maxSum(TreeNode* root) {
if (root == NULL)
return 0;
int leftSum = maxSum(root->left);
int rightSum = maxSum(root->right);
if (leftSum + rightSum + root->val > r) {
r = leftSum + rightSum + root->val;
}
return max(0, max(leftSum, rightSum) + root->val);
}
void pull( Treap * a ){
a->sum = Sum( a->l ) + Sum( a->r ) + a->val;
a->lsum = Sum( a->l ) + a->val + max( 0 , lSum( a->r ) );
if( a->l ) a->lsum = max( lSum( a->l ) , a->lsum );
a->rsum = Sum( a->r ) + a->val + max( 0 , rSum( a->l ) );
if( a->r ) a->rsum = max( rSum( a->r ) , a->rsum );
a->maxsum = max( 0 , rSum( a->l ) ) + a->val + max( 0 , lSum( a->r ) );
a->maxsum = max( a->maxsum , max( maxSum( a->l ) , maxSum( a->r ) ) );
a->sz = Size( a->l ) + Size( a->r ) + 1;
}
int maxSum(Node *root){
if(!root)
return 0;
int leftSum = maxSum(root->left);
int rightSum = maxSum(root->right);
int max =( (leftSum > rightSum) ? leftSum:rightSum );
return (max + root->data);
}
//函数返回当前节点为根的最大和
int maxSum(TreeNode* root,int &sum){
if(root==NULL)
return INT_MIN;
sum=root->val>sum?root->val:sum;
int leftSum=maxSum(root->left,sum);
int rightSum=maxSum(root->right,sum);
leftSum=leftSum>0?leftSum:0; //若左子树和为负数，就直接设为0
rightSum=rightSum>0?rightSum:0; //和左子树相同
sum=max(leftSum+root->val+rightSum,sum);
return root->val+max(leftSum,rightSum);
}
int maxSum(TreeNode* root) {
if(!root) return 0;
if(!root->left && !root->right) {
max_global = std::max(max_global,root->val);
return root->val;
}
int left_val = maxSum(root->left);
int right_val = maxSum(root->right);
int max_local = std::max(root->val, std::max(left_val+root->val, right_val+root->val));
max_global = std::max(max_local, std::max(left_val+right_val+root->val, max_global));
return max_local;
}
int maxSum(TreeNode* root,int& mymax){
if(!root)
return 0;
int left=maxSum(root->left,mymax);
int right=maxSum(root->right,mymax);
int localmax=root->val;
if(left>0)
localmax+=left;
if(right>0)
localmax+=right;
mymax=max(mymax,localmax);
return max(root->val,max(root->val+left,root->val+right));
}
int maxSum(TreeNode *root)
{
if (!root) {
return 0;
}
int l = maxSum(root->left), r = maxSum(root->right);
int cur_max = (l > 0 ? l : 0) + (r > 0 ? r : 0) + root->val;
if (cur_max > ans) {
ans = cur_max;
}
return max(max(l, r) + root->val, 0);
}
// Value may be negative!!
int maxPathSum(TreeNode* root) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
r = INT_MIN;
maxSum(root);
return r;
}
int main()
{
int array[10] = {1, -2, 3, 4, -5, 6, -7, 8, 9, 10};
int max = maxSum(array, sizeof(array)/sizeof(int));
printf("max sum of array is : %d\n", max);
return 0;
}
int maxPathSum(TreeNode *root) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
int mymax=root->val;
int val=maxSum(root,mymax);
return max(mymax,val);
}
int main()
{
int a[10]={1, -2, 3, 10, -4, 7, 2, -5};
//int a[]={-1,-2,-3,-4}; //测试全是负数的用例
printf("子数组的最大和为：%d\n",maxSum(a,8));
return 0;
}
int main()
{
int i,N,T;
int tmp = 0;
scanf("%d",&T);
while(T > 0)
{
scanf("%d",&N);
for(i = 0;i < N;i++)
{
scanf("%d",&a[i]);
}
T--;
// for(i = 0;i < N;i++)
// {
// printf("%d ",a[i]);
// }
// printf("\n");
printf("Case %d:\n",++tmp);
printf("%d",maxSum(a,N));
printf(" %d %d\n",first,last);
if(T > 0)
printf("\n");
}
return 0;
}
// kadane's algo!
int main()
{
int a[] = {-2,1,-3,4,-1,2,1,-5,4};
int i = maxSum(a, 9);
printf("%d\n", i);
return 0;
}
int maxPathSum(TreeNode *root) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
//if (!root) return 0;
int c = 0;
int r = maxSum(root, &c);
return r;
}
int main()
{
int a[]={1,5,9,8,2,2,4,1},maxsum;
maxsum=maxSum(a,sizeof(a)/sizeof(a[0]));
printf("max sum is: %d",maxsum);
getch();
}
void solve(){
Treap *t = NULL , *tl = NULL , *tr = NULL;
n = getint(); m = getint();
for( int i = 0 ; i < n ; i ++ )
t = merge( t , new Treap( getint() ) );
while( m -- ){
scanf( "%s" , c );
if( c[ 0 ] == 'I' ){
int p , k;
p = getint(); k = getint();
split( t , p , tl , tr );
t = NULL;
while( k -- )
t = merge( t , new Treap( getint() ) );
t = merge( t , tr );
t = merge( tl , t );
}else if( c[ 0 ] == 'D' ){
int p , k;
p = getint(); k = getint();
split( t , p - 1 , tl , t );
split( t , k , t , tr );
Delete( t );
t = merge( tl , tr );
}else if( c[ 0 ] == 'R' ){
int p , k;
p = getint(); k = getint();
split( t , p - 1 , tl , t );
split( t , k , t , tr );
t->tag ^= 1;
int swp = t->lsum; t->lsum = t->rsum; t->rsum = swp;
t = merge( t , tr );
t = merge( tl , t );
}else if( c[ 0 ] == 'G' ){
int p , k;
p = getint(); k = getint();
split( t , p - 1 , tl , t );
split( t , k , t , tr );
printf( "%d\n" , Sum( t ) );
t = merge( t , tr );
t = merge( tl , t );
}else if( c[ 2 ] == 'K' ){
int p , k;
p = getint(); k = getint();
split( t , p - 1 , tl , t );
split( t , k , t , tr );
t->tagn = true; t->num = getint();
t->sum = t->num * t->sz;
if( t->num >= 0 )
t->lsum = t->rsum = t->maxsum = t->sum;
else t->lsum = t->rsum = t->maxsum = t->num;
t = merge( t , tr );
t = merge( tl , t );
}else printf( "%d\n" , maxSum( t ) );
}
}
int maxPathSum(TreeNode *root)
{
if (!root) {
return 0;
}
maxSum(root);
return ans;
}
int maxSum(TreeNode * head)
{
//返回的时候只能返回一条边给上层
//但是计算当前node的时候，需要把两条边算进去。
int ret = INT_MIN;
int left = 0, right = 0;
if (head->left)
left = maxSum(head->left);
if (head->right)
right = maxSum(head->right);
int curMax = (left > 0 ? left : 0) + (right > 0 ? right : 0) + head->val;
int m = left > right?left:right;
if(m > 0 )
ret = m + head->val;
else
ret = head->val;
sum = max(curMax, sum);
return ret;
}
int maxSum(int left, int right)
{
int mid, sum, maxToLeft, maxToRight, maxCrossing, maxInA, maxInB;
int i;
// Zero element Vector
if (left>right) {
return 0;
}
// One element Vector
if (left==right) {
return max(0,list[left]);
}
// A is List[Left...Mid], B is List[Mid+1...Right]
mid = (left + right)/2;
// Find max crossing to left
sum=0;
maxToLeft=0;
for(i=mid; i>=left; i--)
{
sum = sum + list[i];
maxToLeft = max(maxToLeft,sum);
}
// Find max crossing to right
sum=0;
maxToRight=0;
for(i=mid+1; i<=right; i++)
{
sum = sum + list[i];
maxToRight = max(maxToRight,sum);
}
maxCrossing = maxToLeft + maxToRight;
maxInA = maxSum(left,mid);
maxInB = maxSum(mid+1,right);
return max(max(maxCrossing,maxInA),maxInB);
}
int main(){
struct node *root = NULL;
/* Constructing tree given in the above figure */
root = newNode(10);
root->left = newNode(-2);
root->right = newNode(7);
root->left->left = newNode(8);
root->left->right = newNode(-4);
std::cout<<"max root to leaf sum:"<<maxSum(root)<<std::endl;
return 0;
}
int main() {
scanf("%d",&t);
for(i=1; i<=t; i++) {
init();
scanf("%d",&n);
for(j=0; j<n; j++) {
scanf("%d",&a[j]);
}
maxSum(a);
printf("Case %d:\n",i);
printf("%d %d %d\n",max,lflag,rflag);
if(i!=t)printf("\n");
}
return 0;
}
int main()
{
struct node *root = newNode(1);
root->left = newNode(-10);
root->right = newNode(-30);
root->left->left = newNode(4);
root->left->right = newNode(5);
root->left->left->left = newNode(-6);
int max=0;
maxSum(root, &max);
printf("maxSum = %d\n", max);
return 0;
}
int main()
{
int a[SIZE];
int n = sizeof(a) / sizeof(a[0]); // 배열 원소의 갯수
clock_t t1, t2, t3, t4;
init(a, n);
t1 = clock();
printf("maxSum : %d\n", maxSum(a, n));
t2 = clock();
printf("fastMaxSum : %d\n", fastMaxSum(a, n));
t3= clock();
printf("fastestMaxSum : %d\n", fastestMaxSum(a, n));
t4 = clock();
// 수행시간 측정
printf("maxSum : %lf\n", (double)(t2 - t1) / CLOCKS_PER_SEC);
printf("fastMaxSum : %lf\n", (double)(t3 - t2) / CLOCKS_PER_SEC);
printf("fastestMaxSum : %lf\n", (double)(t4 - t3) / CLOCKS_PER_SEC);
return 0;
}
int main(int argc, char** argv) {
printf ("%d \n", maxSum(0,4));
return 0;
}
int maxPathSum(TreeNode* root) {
int sum=INT_MIN; //保存最大值
maxSum(root,sum);
return sum;
}
int maxPathSum(TreeNode *root)
{
sum = root->val;
maxSum(root);
return sum;
}
/////implement APcluser algorithm
void APcluster(float s[][R],float p[],int idx[])
{
float Max(float a[][R],float s[][R],int i);
float maxSum(float z,float r[][R],int k);
float lam=L;//¦Ë
int i,j,k,k1;
int times=0,mx=0;
float a[R][R],r[R][R],e[R][R];
float sum=0.0,tem=0.0,old=0.0,Rdis=0.0,Rdsum=0.0,Rdaver=0.0,Adis=0.0,Adsum=0.0,Adaver=0.0;
bool flag=true;
//////Initialize///
for(i=0;i<R;i++)
{
for(j=0;j<R;j++)
{
a[i][j]=0.0;
r[i][j]=0.0;
e[i][j]=0.0;
}
}
/////iterations////
while(flag)
{
times++;
Rdsum=0.0;
Adsum=0.0;
///Responsibility
for(i=0;i<R;i++)
{
k=0;
for(k=0;k<R;k++)
{
old=r[i][k];
r[i][k]=s[i][k]-Max(a,s,i); //formula1:r(i,k)<-s(i,k)-max{a(i,k')+s(i,k')}
r[i][k]=(1-lam)*old+lam*r[i][k]; //formula2:r(new)=¦Ë*r(new)+(1-¦Ë)*r(old)
Rdis=r[i][k]-old; //calculate the change
// printf("Rdis(%d,%d):%f ",i,k,Rdis);
Rdsum=Rdsum+Rdis; //sum of the changes
}
}
Rdaver=Rdsum/R; //calculate the average of the sum of the changes
//printf("\nRdaver %f , ",Rdaver); //test
///availabilities
for(j=0;j<R;j++)
{
k1=0;
while(k1<R)
{
old=a[j][k1];
if(j==k1)
{
a[j][k1]=maxSum(0.0,r,k1);
}
else
{
tem=r[k1][k1]+maxSum(0.0,r,k1); //formula3: r(k,k)+sum of max{0,r(i',k)}
a[j][k1]=(0.0<tem)?0.0:tem; //formula4:min{0,formula3}
}
a[j][k1]=(1-lam)*old+lam*a[j][k1]; //formula:r(new)=¦Ë*r(new)+(1-¦Ë)*r(old)
Adis=a[j][k1]-old; //calculate the change
Adsum=Adsum+Adis; //sum of the changes
k1++;
} //while
} //for
Adaver=Adsum/R; //calculate the average of the sum of the changes
for(i=0;i<R;i++)
{
for(j=0;j<R;j++)
{
e[i][j]=a[i][j]+r[i][j];
}
}
//e(i,k)=maxk{e(i,k)},then make the exemplar decisions
for(i=0;i<R;i++)
{
mx=0;
for(j=0;j<R;j++)
{
if(e[i][j]>e[i][mx])
{
mx=j;
}
}
idx[i]=mx;
}
//printf("\nAdaver %f , ",Adaver); //test
if(((Rdaver*Rdaver)<Threshold) && ((Adaver*Adaver) <Threshold)||(times>MAXI))
flag=false;
}
printf("Iterators : %d\n ",times);
}
int maxPathSum(TreeNode* root) {
max_global = root->val;
maxSum(root);
return max_global;
}