Submission #73799

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
73799	2018-08-29 04:13:42	ainta	Schools (IZhO13_school)	C++17	100 / 100	613 ms	5372 KiB

school

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#include<cstdio>
#include<algorithm>
#define BS 100000
using namespace std;
int n, A[301000], B[301000], X, Y, c;
long long sum;
struct point {
  int a, ck;
  bool operator < (const point &p)const {
    return a != p.a ? a < p.a : ck < p.ck;
  }
}w[301000];
bool Pos(int d) {
  int i;
  for (i = 1; i <= n; i++) {
    if (A[i] <= B[i] + d) {
      w[i] = { B[i]+d,1 };
    }
    else w[i] = { A[i],0 };
  }
  sort(w + 1, w + n + 1);
  sum = 0, c = 0;
  for (i = n; i > n - X - Y; i--) {
    sum += w[i].a;
    if (w[i].ck)c++;
  }
  return c >= Y;
}
int main() {
  int b = 0, e = 2*BS, mid, r = 0, i;
 
 
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Compilation message (stderr)

school.cpp: In function 'int main()':
school.cpp:31:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n,&X,&Y);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
school.cpp:32:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i = 1; i <= n; i++)scanf("%d%d", &A[i], &B[i]);
                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100