Submission #43205

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
43205	2018-03-10 15:03:05	baactree	즐거운 사진 수집 (JOI13_collecting)	C++14	100 / 100	2142 ms	44488 KiB

collecting

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#include <bits/stdc++.h>
using namespace std;
int n, q;
int w[2][21], o[2][1 << 20], s[2][21][1 << 20];
int main() {
  scanf("%d%d", &n, &q);
  long long cnt = 0;
  for (int i = 1; i <= n; i++)w[0][i] = w[1][i] = 1 << (n - i);
  while (q--) {
    int a, b;
    scanf("%d%d", &a, &b);b--;
    for (int i = 1, d = 2,k=0; i <= n;cnt+=w[!a][i]*k, i++, d <<= 1,k=0) {
      if (!(s[a][i][b / d] % d))w[a][i]--, k = 1;
      s[a][i][b / d] += o[a][b] ? -1 : 1;
      if (!(s[a][i][b / d] % d))w[a][i]++, k = -1;
    }
    o[a][b] ^= 1;
    printf("%lld\n", cnt * 4 + 1);
  }
  return 0;
}
 
 
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Compilation message (stderr)

collecting.cpp: In function 'int main()':
collecting.cpp:6:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &q);
                       ^
collecting.cpp:11:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);b--;
                        ^

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70