oj.uz

Submission #655731

# Submission time Handle Problem Language Result Execution time Memory
655731 2022-11-05T11:50:42 Z Richem Circle selection (APIO18_circle_selection) C++14
0 / 100
 3000 ms 310680 KB 
#include <iostream>
#include <algorithm>
#include <unordered_map>
#include <vector>
using namespace std;
 
const int MAX_ALED = 3e5+42, MAX_POS = 1e9;
 
struct Aled{
    int xCentre, yCentre, rayon, id;
 
    bool ragequit = false;
 
    bool intersecte(Aled autre) {
        int x = xCentre - autre.xCentre, y = yCentre - autre.yCentre;
        unsigned long long xCarre = x*x, yCarre = y*y, rayonCarre = (rayon + autre.rayon) * (rayon + autre.rayon);
        return xCarre + yCarre <= rayonCarre;
    }
    bool operator<(Aled autre) {
        if(rayon == autre.rayon)
            return id < autre.id;
        return rayon > autre.rayon;
    }
};
 
struct Position{
    long long int x,y;
 
    unsigned long long int getId() {
        return (x << 32) + y;
    }
};
 
int nbAled;
Aled aled[MAX_ALED];
Aled triRayon[MAX_ALED];
 
void input() {
    cin >> nbAled;
 
    for(int iAled = 0; iAled < nbAled; iAled++) {
        cin >> aled[iAled].xCentre >> aled[iAled].yCentre >> aled[iAled].rayon;
        aled[iAled].xCentre += MAX_POS;
        aled[iAled].yCentre += MAX_POS;
        aled[iAled].id = iAled;
    }
    sort(aled, aled + nbAled);
}
 
unordered_map<long long int, vector<int>> enfer;
Position quelCase[MAX_ALED];
 
void calcGrille(int taille) {
    enfer.clear();
    for(int cur = 0; cur < nbAled; cur++) {
        int xCase = aled[cur].xCentre / taille, yCase = aled[cur].yCentre / taille;
 
        Position caseCur = {xCase, yCase};
 
        enfer[caseCur.getId()].push_back(cur);
        quelCase[cur] = {xCase, yCase};
    }
}
 
bool retire[MAX_ALED] = {0};
int rep[MAX_ALED];
 
int tailleGrille;
 
int main() {
    input();
    tailleGrille = (1 << 30);

    for(int curCercle = 0; curCercle < nbAled; curCercle++) {
        if(retire[curCercle])
            continue;
 
        while(aled[curCercle].rayon < tailleGrille) {
            tailleGrille /= 2;
            calcGrille(tailleGrille);
        }

        for(int deltaX = -3; deltaX <= 3; deltaX++) {
            for(int deltaY = -3; deltaY <= 3; deltaY++) {
                int xCaseNouv = quelCase[curCercle].x + deltaX, yCaseNouv = quelCase[curCercle].y + deltaY;
                Position caseNouv = {xCaseNouv, yCaseNouv};

                if(xCaseNouv < 0 || yCaseNouv < 0)
                    continue;
 
                for(auto autreCercle : enfer[caseNouv.getId()]) {
                    if(!retire[autreCercle] && aled[curCercle].intersecte(aled[autreCercle])) {
                        retire[autreCercle] = 1;
                        rep[aled[autreCercle].id] = aled[curCercle].id+1;
                    }
                }
            }
        }
    }
 
    for(int curCercle = 0; curCercle < nbAled; curCercle++) {
        cout << rep[curCercle] << " ";
    }
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12104 KB Output is correct
2 Correct 5 ms 11988 KB Output is correct
3 Incorrect 5 ms 12048 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 389 ms 22772 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 11984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3091 ms 310680 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12104 KB Output is correct
2 Correct 5 ms 11988 KB Output is correct
3 Incorrect 5 ms 12048 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12104 KB Output is correct
2 Correct 5 ms 11988 KB Output is correct
3 Incorrect 5 ms 12048 KB Output isn't correct
4 Halted 0 ms 0 KB -