QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#309167 | #6136. Airdrop | Alex_Wei | AC ✓ | 699ms | 14764kb | C++14 | 3.1kb | 2024-01-20 15:18:12 | 2024-01-20 15:18:12 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdi = pair<double, int>;
using pdd = pair<double, double>;
using ull = unsigned long long;
using LL = __int128_t;
#define ppc(x) __builtin_popcount(x)
#define clz(x) __builtin_clz(x)
bool Mbe;
constexpr int mod = 1e9 + 7;
void addt(int &x, int y) {
x += y, x >= mod && (x -= mod);
}
int add(int x, int y) {
return x += y, x >= mod && (x -= mod), x;
}
struct FastMod {
ull b, m;
FastMod(ull b = 1) : b(b), m(ull((LL(1) << 64) / b)) {}
ull reduce(ull a) {
ull q = ull((LL(m) * a) >> 64);
ull r = a - q * b; // can be proven that 0 <= r < 2 * b
return r >= b ? r - b : r;
}
} R;
// ---------- templates above ----------
constexpr int N = 3e5 + 5;
constexpr int V = 1e5 + 1;
int n, y;
int cnt, d[N], res[N];
struct point {
int x, y;
bool operator < (const point &z) const {
return x != z.x ? x < z.x : abs(y - ::y) < abs(z.y - ::y);
}
} c[N];
int cur, pt, buc[N], tp[N], vis[N], num, ap[N];
void init() {
for(int i = 1; i <= num; i++) {
buc[ap[i]] = vis[ap[i]] = tp[ap[i]] = 0;
}
cur = pt = num = 0;
}
int calc(int x) {
while(pt < n && c[pt + 1].x < x) {
int pos = V;
if(c[++pt].y >= y) pos += c[pt].x - (c[pt].y - y);
else pos += c[pt].x + (c[pt].y - y);
if(!vis[pos]) ap[++num] = pos, vis[pos] = 1;
if(pt < n && c[pt].x == c[pt + 1].x && c[pt].y + c[pt + 1].y == 2 * y) {
if(tp[pos]) {
buc[pos] ? cur-- : cur++;
buc[pos] ^= 1;
}
tp[pos] = 1;
}
else tp[pos] ^= 1;
buc[pos] ? cur-- : cur++;
buc[pos] ^= 1;
}
return cur;
}
void solve() {
cin >> n >> y, cnt = 0;
map<int, int> mp;
for(int i = 1; i <= n; i++) {
cin >> c[i].x >> c[i].y;
mp[c[i].x]++;
d[++cnt] = c[i].x - 1;
d[++cnt] = c[i].x;
d[++cnt] = c[i].x + 1;
}
sort(d + 1, d + cnt + 1);
cnt = unique(d + 1, d + cnt + 1) - d - 1;
sort(c + 1, c + n + 1);
init();
for(int i = 1; i <= cnt; i++) {
auto it = mp.find(d[i]);
if(it != mp.end()) res[i] = it->second;
else res[i] = 0;
res[i] += calc(d[i]);
}
init();
for(int i = 1; i <= n; i++) c[i].x = V - c[i].x;
for(int i = 1; i <= cnt; i++) d[i] = V - d[i];
reverse(c + 1, c + n + 1);
reverse(d + 1, d + cnt + 1);
reverse(res + 1, res + cnt + 1);
init();
for(int i = 1; i <= cnt; i++) res[i] += calc(d[i]);
int mn = n, mx = 0;
for(int i = 1; i <= cnt; i++) {
mn = min(mn, res[i]);
mx = max(mx, res[i]);
}
cout << mn << " " << mx << "\n";
}
bool Med;
signed main() {
fprintf(stderr, "%.3lf MB\n", (&Mbe - &Med) / 1048576.0);
// ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#ifdef ALEX_WEI
FILE* IN = freopen("1.in", "r", stdin);
FILE* OUT = freopen("1.out", "w", stdout);
#endif
int T = 1;
cin >> T;
while(T--) solve();
fprintf(stderr, "%.3lf ms\n", 1e3 * clock() / CLOCKS_PER_SEC);
return 0;
}
/*
g++ a.cpp -o a -std=c++14 -O2 -DALEX_WEI
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7948kb
input:
3 3 2 1 2 2 1 3 5 3 3 2 1 2 5 4 3 2 3 1 3 4 3
output:
1 3 0 3 2 2
result:
ok 6 numbers
Test #2:
score: 0
Accepted
time: 699ms
memory: 14764kb
input:
3508 6 1 7 1 1 1 9 1 10 1 3 1 4 1 3 8 8 9 8 7 1 8 9 5 10 1 10 8 10 2 5 1 9 9 5 9 10 9 6 4 4 7 6 7 10 5 3 8 9 5 9 9 7 5 4 7 10 5 6 9 9 5 6 6 9 3 3 2 5 1 3 8 6 4 5 9 10 2 2 9 10 10 10 8 4 1 7 1 6 1 3 1 5 1 2 4 9 3 3 3 4 5 3 8 9 6 9 9 6 3 9 5 9 3 2 9 9 1 9 2 4 1 5 4 5 6 6 5 9 8 4 1 2 1 5 1 7 1 3 1 9 10...
output:
6 6 1 3 1 5 2 6 2 6 0 2 4 4 2 2 4 4 4 7 4 4 9 9 4 6 0 3 2 6 2 2 2 6 10 10 9 9 1 3 2 4 0 2 2 4 4 7 6 6 9 9 2 2 2 2 3 5 1 4 2 2 1 1 3 5 4 7 3 6 1 1 5 7 5 5 1 3 2 2 1 7 1 1 4 6 2 4 2 6 2 4 1 7 2 4 9 9 0 3 1 1 3 8 2 2 2 2 9 9 3 7 4 4 4 6 2 5 0 2 2 5 3 3 0 4 4 4 2 4 2 2 4 6 6 6 6 6 0 2 2 6 2 4 2 6 2 5 1 ...
result:
ok 7016 numbers