oj.uz

Submission #43193

# Submission time Handle Problem Language Result Execution time Memory
43193 2018-03-10T14:01:57 Z baactree 즐거운 사진 수집 (JOI13_collecting) C++14
30 / 100
 5000 ms 42412 KB 
#include <bits/stdc++.h>
using namespace std;
int n, q;
int r[21][1 << 20], c[21][1 << 20];
int rs[1 << 21], cs[1 << 21];
int ro[1 << 20], co[1 << 20];
void update(int idx, int val, int *tree) {
	idx += 2;
	while (idx < 1 << 21) {
		tree[idx] += val;
		idx += idx&(-idx);
	}
}
int query(int idx, int *tree) {
	int ret = 0;
	idx += 2;
	while (idx) {
		ret += tree[idx];
		idx -= idx&(-idx);
	}
	return ret;
}
int main() {
	scanf("%d%d", &n, &q);
	long long cnt = 0;
	for (int i = 1; i <= n; i++)
		r[i][0] = c[i][0] = 1 << (n - i);
	while (q--) {
		int a, b;
		scanf("%d%d", &a, &b);
		b--;
		if (a) {
			//col

			for (int i = 1; i <= n; i++) {
				int d = 1 << i;
				int idx = b / d;
				int le = idx*d;
				int ri = (idx + 1)*d - 1;
				int pre = (query(ri, cs) - query(le - 1, cs))%d;
				c[i][pre]--;
				update(b, co[b] ? -1 : 1, cs);
				co[b] ^= 1;
				int now = (query(ri, cs) - query(le - 1, cs))%d;
				c[i][now]++;
				long long k = 0;
				if (pre == 0)k = 1;
				else if (now == 0)k = -1;
				cnt += r[i][0] * k;
				update(b, co[b] ? -1 : 1, cs);
				co[b] ^= 1;
			}
			update(b, co[b] ? -1 : 1, cs);
			co[b] ^= 1;
		}
		else {
			//row
			for (int i = 1; i <= n; i++) {
				int d = 1 << i;
				int idx = b / d;
				int le = idx*d;
				int ri = (idx + 1)*d - 1;
				int pre = (query(ri, rs) - query(le - 1, rs))%d;
				r[i][pre]--;
				update(b, ro[b] ? -1 : 1, rs);
				ro[b] ^= 1;
				int now = (query(ri, rs) - query(le - 1, rs))%d;
				r[i][now]++;
				long long k = 0;
				if (pre == 0)k = 1;
				else if (now == 0)k = -1;
				cnt += c[i][0] * k;
				update(b, ro[b] ? -1 : 1, rs);
				ro[b] ^= 1;
			}
			update(b, ro[b] ? -1 : 1, rs);
			ro[b] ^= 1;
		}
		printf("%lld\n", cnt * 4 + 1);
	}
	return 0;
}

Compilation message

collecting.cpp: In function 'int main()':
collecting.cpp:24:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &q);
                       ^
collecting.cpp:30:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
                        ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 608 KB Output is correct
3 Correct 2 ms 608 KB Output is correct
4 Correct 2 ms 608 KB Output is correct
5 Correct 2 ms 612 KB Output is correct
6 Correct 2 ms 668 KB Output is correct
7 Correct 2 ms 680 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 940 KB Output is correct
2 Correct 6 ms 940 KB Output is correct
3 Correct 7 ms 940 KB Output is correct
4 Correct 7 ms 940 KB Output is correct
5 Correct 8 ms 1036 KB Output is correct
6 Correct 7 ms 1036 KB Output is correct
7 Correct 7 ms 1036 KB Output is correct
8 Correct 7 ms 1036 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5010 ms 42412 KB Time limit exceeded
2 Halted 0 ms 0 KB -