oj.uz

Submission #283880

# Submission time Handle Problem Language Result Execution time Memory
283880 2020-08-26T08:39:59 Z 임성재(#5753) Ruka (COI15_ruka) C++17
44 / 100
 2000 ms 3324 KB 
#include<bits/stdc++.h>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define mp make_pair
#define all(v) (v).begin(), (v).end()

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INF = 1e18;
const ll inf = 1e9 + 7;
const int sz = 224;

int n, m, ans;
pii idx[sz * sz + 100];
int x[sz * sz + 100];
int y[sz * sz + 100];
int xh[sz+1];
int yh[sz+1];
int X[sz+1][sz+1], Y[sz+1][sz+1];
int xans[2][sz+1][sz], yans[2][sz+1][sz];
int A[sz+1];

void upd(int t) {
	for(int i=0; i<sz-1; i++) {
		xans[0][t][i] = min(X[t][i+1], X[t][i]);
		xans[1][t][i] = max(X[t][i+1], X[t][i]);
		yans[0][t][i] = min(Y[t][i+1], Y[t][i]);
		yans[1][t][i] = max(Y[t][i+1], Y[t][i]);
	}

	sort(xans[0][t], xans[0][t] + sz - 1), sort(xans[1][t], xans[1][t] + sz - 1);
	sort(yans[0][t], yans[0][t] + sz - 1), sort(yans[1][t], yans[1][t] + sz - 1);
}

int main() {
	fast;

	cin >> n;

	for(int i=1; i <= sz * sz; i++) {
		idx[i] = idx[i-1];

		if(i % sz == 0) idx[i].fi++, idx[i].se = 0;
		else idx[i].se++;
	}

	X[0][0] = Y[0][0] = 1;

	for(int i=1; i <= sz * sz; i++) {
		if(i <= n) cin >> x[i] >> y[i];

		X[idx[i].fi][idx[i].se] = X[idx[i-1].fi][idx[i-1].se] + x[i];
		Y[idx[i].fi][idx[i].se] = Y[idx[i-1].fi][idx[i-1].se] + y[i];
	}

	for(int i=0; i<sz; i++) {		
		upd(i);

		A[i] += lower_bound(xans[0][i], xans[0][i] + sz - 1, xh[i]) - xans[0][i];
		A[i] -= lower_bound(xans[1][i], xans[1][i] + sz - 1, xh[i]) - xans[1][i];
		A[i] += lower_bound(yans[0][i], yans[0][i] + sz - 1, yh[i]) - yans[0][i];
		A[i] -= lower_bound(yans[1][i], yans[1][i] + sz - 1, yh[i]) - yans[1][i];

		ans += A[i];
	}

	cin >> m;

	int cur = 1;

	while(m--) {
		char c;
		cin >> c;

		if(c == 'B') cur = max(1, cur - 1);
		else if(c == 'F') cur = min(n, cur + 1);
		else if(c == 'Q') {
			int ret = 0;
			for(int i = 0; i < sz; i++) {
				if(i && (ll) (X[i][0] - xh[i]) * (X[i-1][sz-1] - xh[i-1]) < 0) ret++;
				if(i && (ll) (Y[i][0] - yh[i]) * (Y[i-1][sz-1] - yh[i-1]) < 0) ret++;
			}

			cout << ret + ans << "\n";
		}
		else {
			int dx = -x[cur];
			int dy = -y[cur];
			
			cin >> x[cur] >> y[cur];

			dx += x[cur];
			dy += y[cur];

			for(int i = idx[cur].fi + 1; i < sz; i++) {
				ans -= A[i];
				
				xh[i] -= dx;
				yh[i] -= dy;

				A[i] = 0;

				A[i] += lower_bound(xans[0][i], xans[0][i] + sz - 1, xh[i]) - xans[0][i];
				A[i] -= lower_bound(xans[1][i], xans[1][i] + sz - 1, xh[i]) - xans[1][i];
				A[i] += lower_bound(yans[0][i], yans[0][i] + sz - 1, yh[i]) - yans[0][i];
				A[i] -= lower_bound(yans[1][i], yans[1][i] + sz - 1, yh[i]) - yans[1][i];

				ans += A[i];
			}

			for(int i = idx[cur].se; i < sz; i++) {
				X[idx[cur].fi][i] += dx;
				Y[idx[cur].fi][i] += dy;
			}


			int i = idx[cur].fi;
			upd(i);

			ans -= A[i];
			A[i] = 0;

			A[i] += lower_bound(xans[0][i], xans[0][i] + sz - 1, xh[i]) - xans[0][i];
			A[i] -= lower_bound(xans[1][i], xans[1][i] + sz - 1, xh[i]) - xans[1][i];
			A[i] += lower_bound(yans[0][i], yans[0][i] + sz - 1, yh[i]) - yans[0][i];
			A[i] -= lower_bound(yans[1][i], yans[1][i] + sz - 1, yh[i]) - yans[1][i];

			ans += A[i];
		}
	}
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1920 KB Output is correct
2 Correct 4 ms 1920 KB Output is correct
3 Correct 37 ms 2040 KB Output is correct
4 Correct 24 ms 2048 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1920 KB Output is correct
2 Correct 4 ms 1920 KB Output is correct
3 Correct 37 ms 2040 KB Output is correct
4 Correct 24 ms 2048 KB Output is correct
5 Correct 1139 ms 2416 KB Output is correct
6 Correct 1593 ms 2272 KB Output is correct
7 Correct 1774 ms 2552 KB Output is correct
8 Correct 1925 ms 2552 KB Output is correct

Subtask #3
0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1920 KB Output is correct
2 Correct 4 ms 1920 KB Output is correct
3 Correct 37 ms 2040 KB Output is correct
4 Correct 24 ms 2048 KB Output is correct
5 Correct 1139 ms 2416 KB Output is correct
6 Correct 1593 ms 2272 KB Output is correct
7 Correct 1774 ms 2552 KB Output is correct
8 Correct 1925 ms 2552 KB Output is correct
9 Execution timed out 2081 ms 3324 KB Time limit exceeded
10 Halted 0 ms 0 KB -