//`更新一个点`
void Update(int i, int j, int num) {
int tempj;
while( i <= Row ) {
tempj = j;
while( tempj <= Col ) {
c[i][tempj] += num;
tempj += Lowbit(tempj);
}
i += Lowbit(i);
}
}
//`求区间和`
int Sum(int i, int j) {
int tempj, sum = 0;
while( i > 0 ) {
tempj = j;
while( tempj > 0 ) {
sum += c[i][tempj];
tempj -= Lowbit(tempj);
}
i -= Lowbit(i);
}
return sum;
}
int Sum(int end){//求前end项和
int sum = 0;
while(end > 0){
sum += c[end];
end -= Lowbit(end);
}
return sum;
}
//`求区间和`
int musum(int end) { //` 复杂度 O(logn)`
int sum = 0;
while (end > 0) {
sum += m[end];
end -= Lowbit(end);
}
return sum;
}
void plus(int pos,int num){//将第pos个元素更改为num
while(pos <= n){//int n;
c[pos] += num;
pos += Lowbit(pos);
}
}
//`修改一个位置的值`
void myplus(int pos) { //` 复杂度 O(logn)`
while(pos <= mx) {
m[pos] ++;
pos += Lowbit(pos);
}
}
