Submission #740610

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
7406102023-05-12 19:29:33rainboyExercise Deadlines (CCO20_day1problem2)C11
25 / 25
58 ms4228 KiB
#include <stdio.h>
#define N 200000
#define N_ (1 << 18) /* N_ = pow2(ceil(log2(N + 1))) */
int st[N_ * 2], n_;
void build(int n) {
int i;
n_ = 1;
while (n_ <= n)
n_ <<= 1;
for (i = 0; i < n; i++)
st[n_ + i] = 1;
for (i = n_ - 1; i > 0; i--)
st[i] = st[i << 1 | 0] + st[i << 1 | 1];
}
void update(int i) {
for (i += n_; i > 0; i >>= 1)
st[i]--;
}
int query(int l) {
int r = n_ - 1, x = 0;
for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
if ((l & 1) == 1)
x += st[l++];
 
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Compilation message (stderr)

Main.c: In function 'main':
Main.c:54:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:56:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |   scanf("%d", &dd[i]), dd[i]--;
      |   ^~~~~~~~~~~~~~~~~~~
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