oj.uz

Submission #387560

# Submission time Handle Problem Language Result Execution time Memory
387560 2021-04-09T01:56:52 Z Kevin_Zhang_TW Trampoline (info1cup20_trampoline) C++17
54 / 100
 392 ms 28496 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif

const int MAX_N = 200010, MAX_K = 18;

int R, C, n;

int nxt[MAX_K][MAX_N];

pair<int,int> a[MAX_N];

int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> R >> C >> n;
	for (int x, y, i = 0;i < n;++i) {
		cin >> x >> y;
		a[i] = {x, y};
	}
	sort(a, a+n);

	// init

	for (int i = n-1, j = n-1;i >= 0;--i) {
		auto [x, y] = a[i];
		while (j > 0 && a[j-1] >= make_pair(x+1, y))
			--j;

		auto [nx, ny] = a[j];
		if (nx == x+1 && ny >= y)
			nxt[0][i] = j;
		else
			nxt[0][i] = n;
		DE(x, y, nx, ny);
	}

	nxt[0][n] = n;

	for (int d = 1;d < MAX_K;++d)
		for (int i = 0;i <= n;++i) 
			nxt[d][i] = nxt[d-1][ nxt[d-1][i] ];

	int Q;
	cin >> Q;

	for (int x1, y1, x2, y2, i = 0;i < Q;++i) {
		cin >> x1 >> y1 >> x2 >> y2;

		int ind = lower_bound(a, a+n, make_pair(x1, y1)) - a;

		auto [x, y] = a[ind];

		DE(x1, y1, x, y, x2, y2);

		if (x1 > x2 || y2 > y2) {
			cout << "No\n";
			continue;
		}

		if (x1 == x2) {
			cout << "Yes\n";
			continue;
		}

		if (ind == n || x != x1) {
			cout << "No\n";
			continue;
		}

		int d = x2 - x1 - 1;

		for (int j = 0;j < MAX_K;++j)
			if (d>>j&1) ind = nxt[j][ind];

		tie(x, y) = a[ind];

		DE(x, y);

		if (ind == n || y > y2) {
			cout << "No\n";
		}
		else cout << "Yes\n";
	}

}

Compilation message

trampoline.cpp: In function 'int32_t main()':
trampoline.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
trampoline.cpp:47:3: note: in expansion of macro 'DE'
   47 |   DE(x, y, nx, ny);
      |   ^~
trampoline.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
trampoline.cpp:66:3: note: in expansion of macro 'DE'
   66 |   DE(x1, y1, x, y, x2, y2);
      |   ^~
trampoline.cpp:68:21: warning: self-comparison always evaluates to false [-Wtautological-compare]
   68 |   if (x1 > x2 || y2 > y2) {
      |                  ~~ ^ ~~
trampoline.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
trampoline.cpp:90:3: note: in expansion of macro 'DE'
   90 |   DE(x, y);
      |   ^~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1100 KB 200 token(s): yes count is 21, no count is 179
2 Correct 4 ms 1236 KB 200 token(s): yes count is 70, no count is 130
3 Correct 3 ms 972 KB 197 token(s): yes count is 25, no count is 172

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 17840 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 89 ms 17776 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 75 ms 17476 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 77 ms 17856 KB 4000 token(s): yes count is 1991, no count is 2009

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 217 ms 28496 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 212 ms 28356 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 218 ms 28272 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 249 ms 28432 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 224 ms 28400 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 225 ms 28228 KB 200000 token(s): yes count is 97163, no count is 102837

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 1100 KB expected NO, found YES [16th token]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 28324 KB 200000 token(s): yes count is 171404, no count is 28596
2 Incorrect 392 ms 28372 KB expected NO, found YES [22020th token]
3 Halted 0 ms 0 KB -