Submission #16760

#	Time	Username	Problem	Language	Result	Execution time	Memory
16760		suhgyuho_william	수족관 2 (KOI13_aqua2)	C++98	0 / 100	168 ms	9872 KiB

aqua2

#include <stdio.h>
#include <algorithm>
using namespace std;

int n,k;

struct data{
    int x,y;
    bool hole;
}a[300002];
struct data2{
    int first,second;
    bool operator()(data2 x,data2 y){
        if(x.first != y.first) return (x.first < y.first);
        return (x.second < y.second);
    }
}ta[150002];

int find_hole(int ix,int iy){
    int s,mid,e;

    s = 1;
    e = (n/2)-1;
    while(true){
        mid = (s+e)/2;
        if(a[mid*2].x == ix && a[mid*2].y == iy) return mid*2;
        if(a[mid*2].x > ix) e = mid-1;
        else s = mid+1;
    }
}
int left_node[150002],right_node[150002];
int left_y[150002],right_y[150002];

void Input(){
    int i,ix,iy;
    //freopen("input.txt","r",stdin);

    scanf("%d",&n);
    for(i=1; i<=n; i++){
        scanf("%d %d",&a[i].x,&a[i].y);
        a[i].hole = false;
    }
    scanf("%d",&k);
    for(i=1; i<=k; i++){
        scanf("%d %d",&ix,&iy);
        a[find_hole(ix,iy)].hole = true;
        scanf("%d %d",&ix,&iy);
    }
    for(i=1; i<n/2; i++) ta[i].first = a[i*2].y;
    for(i=1; i<n/2; i++) ta[i].second = i*2;
    sort(ta+1,ta+(n/2),data2());
}

void set_tree(){
    int i,index;
    int l,r;

    for(i=1; i<n/2; i++){
        left_node[i] = i-1;
        right_node[i] = i+1;
        left_y[i] = a[(i*2)-1].y;
        right_y[i] = a[(i*2)+2].y;
    }

    for(i=(n/2)-1; i>=1; i--){
        index = ta[i].second/2;
        if(left_y[index] >= right_y[index]){
            l = left_node[index];
            right_node[l] = right_node[index];
            right_y[l] = right_y[index];
        }else{
            r = right_node[index];
            left_node[r] = left_node[index];
            left_y[r] = left_y[index];
        }
    }
}

int hole[150002];
double watertime[150002];
long long leftwater;
long long water;

void aqua(){
    int i,index;

    for(i=(n/2)-1; i>=1; i--){
        index = ta[i].second/2;
        if(a[index*2].hole == true) hole[index]++;
        hole[right_node[index]] += hole[index];
        hole[left_node[index]] += hole[index];
        water = a[right_node[index]*2].x - a[(left_node[index]*2)+1].x;
        if(left_y[index] >= right_y[index]){
            water *= (long long)(a[index*2].y-a[left_node[index]*2].y);
        }else{
            water *= (long long)(a[index*2].y-a[right_node[index]*2].y);
        }
        if(hole[index] == 0) leftwater += water;
        else watertime[index] += ((double)water / (double) hole[index]);
        watertime[left_node[index]] = max(watertime[left_node[index]],watertime[index]);
        watertime[right_node[index]] = max(watertime[right_node[index]],watertime[index]);
    }
}

void print(){
    printf("%.2f\n",watertime[ta[1].second/2]);
    printf("%lld",leftwater);
}

int main(void){
    Input();
    set_tree();
    aqua();
    print();

    return 0;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 21
• Subtask 3: 0 / 35
• Subtask 4: 0 / 31