Submission #737184

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
737184	2023-05-06 18:06:46	Username4132	Circle selection (APIO18_circle_selection)	C++14	7 / 100	3052 ms	15052 KiB

circle_selection

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#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
using pii=pair<int, int>;
#define forn(i, n) for(int i=0; i<(int)n; ++i)
struct circle{
    int x, y, r, ind;
    circle(int X=0, int Y=0, int R=0) : x(X), y(Y), r(R){}
};
bool operator< (circle a, circle b){
    return a.r!=b.r? a.r>b.r : a.ind<b.ind;
}
const int MAXN=300010, LOG=32, dif[3]={-1, 0, 1};
int n, ans[MAXN];
circle arr[MAXN];
vector<circle> cirList;
bool inters(circle a, circle b){
    long long dx=a.x-b.x, dy=a.y-b.y, sr=a.r+b.r;
    return dx*dx <= sr*sr - dy*dy;
}
void insert(circle c){
    cirList.push_back(c);
}
 
 
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Compilation message (stderr)

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:40:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     forn(i, n) scanf("%d %d %d", &arr[i].x, &arr[i].y, &arr[i].r), arr[i].ind=i;
      |                ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 15
• Subtask 4: 0 / 23
• Subtask 5: 0 / 30
• Subtask 6: 0 / 13