Submission #139755

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
139755	2019-08-01 11:12:19	ae04071	Circle selection (APIO18_circle_selection)	C++11	19 / 100	3059 ms	35192 KiB

circle_selection

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#include <bits/stdc++.h>
#define fi first
#define se second
#define sz(x) ((int)(x).size())
using namespace std;
using pii = pair<int,int>;
const int INF = 1e9;
struct circle{
    int x,y,r,i;
    bool operator<(const circle &rhs)const {
        return r!=rhs.r ? r>rhs.r : i<rhs.i;
    }
    bool touch(circle &rhs)const {
        return 1ll*(x-rhs.x)*(x-rhs.x)+1ll*(y-rhs.y)*(y-rhs.y)<=1ll*(r+rhs.r)*(r+rhs.r);
    }
}arr[300001],o[300001];
int n,chk[300001];
set<pii> tr;
int main() {
    scanf("%d",&n);
    for(int i=1;i<=n;i++) {
        scanf("%d%d%d",&arr[i].x,&arr[i].y,&arr[i].r);
        arr[i].i=i;
        tr.insert({arr[i].x,i});
        o[i] = arr[i];
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
circle_selection.cpp:26:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d",&arr[i].x,&arr[i].y,&arr[i].r);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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