Submission #13352

#	Time	Username	Problem	Language	Result	Execution time	Memory
13352		gs14004	수족관 1 (KOI13_aqua1)	C++14	100 / 100	16 ms	1448 KiB

aqua1

#include <cstdio>
#include <utility>
#include <map>
#include <algorithm>
using namespace std;
typedef pair<int,int> pi;

int x[2505], y[2505], hole[2505], n;
map<pi,int> mp;

int h;
int res;

int f(int s, int e){
    if(s >= e) return 0;
    int pos = (int)(min_element(y+s,y+e)-y);
    int ph = h, ret = 0;
    h = y[pos];
    int r = f(s,pos);
    r |= f(pos+1,e);
    if(hole[pos] == 0 && !r){
        res += (x[e] - x[s]) * (y[pos] - ph);
        ret = 0;
    }
    else ret = 1;
    h = ph;
    return ret;
}

int main(){
    scanf("%d",&n);
    n/=2;
    for (int i=0; i<n; i++) {
        scanf("%*d %*d %d %d",&x[i],&y[i]);
        mp[pi(x[i],y[i])] = i;
    }
    int t;
    scanf("%d",&t);
    for (int i=0; i<t; i++) {
        int s,e;
        scanf("%d %d %*d %*d",&s,&e);
        hole[mp[pi(s,e)]] = 1;
    }
    f(0,n-1);
    printf("%d",res);
}

• Subtask 1: 23 / 23
• Subtask 2: 19 / 19
• Subtask 3: 22 / 22
• Subtask 4: 36 / 36