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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#455002 | #8793. Toilets | ucup-team3678 | WA | 1ms | 7876kb | C++14 | 4.6kb | 2024-06-25 17:30:02 | 2024-06-25 17:30:03 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 5;
struct pl {
long long st, tm;
int dir;
} z[N];
struct op {
int opt, id;
long long pos;
int operator < (const op y) const {
return opt != y.opt ? opt < y.opt : id < y.id;
}
int operator > (const op y) const {
return opt != y.opt ? opt > y.opt : id > y.id;
}
};
long long L, T;
priority_queue< pair<long long, op>, vector< pair<long long, op> >, greater< pair<long long, op> > > pq;
set<int> toilets;
set< pair<long long, int> > people[2];
long long calc(int id, long long pos, long long Tm) {
long long md;
if (z[id].dir == -1) {
md = ((z[id].st - pos) % L + L) % L;
} else {
md = ((pos - z[id].st) % L + L) % L;
}
long long v1 = Tm / L * L + md;
return (v1 < Tm ? v1 + L : v1);
}
int FindNext(long long x) {
x = (x % L + L) % L;
if (people[0].lower_bound(make_pair(x, 0)) != people[0].end()) {
return (*people[0].lower_bound(make_pair(x, 0))).second;
}
return (*people[0].begin()).second;
}
int FindPrev(long long x) {
x = (x % L + L) % L;
if (people[1].lower_bound(make_pair(x, 1e9)) != people[1].begin()) {
return (*people[1].lower_bound(make_pair((*--people[1].lower_bound(make_pair(x, 1e9))).first, 0))).second;
}
return (*people[1].lower_bound(make_pair((*--people[1].end()).first, 0))).second;
}
void active(long long x) {
toilets.insert(x);
if (!people[0].empty()) {
op tz; tz.opt = 3;
tz.id = FindNext(x + T);
tz.pos = x;
long long Tm = calc(tz.id, x, T);
pq.push(make_pair(Tm, tz));
}
if (!people[1].empty()) {
op tz; tz.opt = 3;
tz.id = FindPrev(x - T);
tz.pos = x;
long long Tm = calc(tz.id, x, T);
pq.push(make_pair(Tm, tz));
}
}
long long FindNxt(long long x) {
x = (x % L + L) % L;
if (toilets.lower_bound(x) != toilets.end()) {
return *toilets.lower_bound(x);
}
return *toilets.begin();
}
long long FindPre(long long x) {
x = (x % L + L) % L;
if (toilets.upper_bound(x) != toilets.begin()) {
return *--toilets.upper_bound(x);
}
return *--toilets.end();
}
void addPeople(int id) {
if (z[id].dir == -1) {
people[0].insert(make_pair(z[id].st, id));
if (!toilets.empty()) {
op tz; tz.opt = 3;
tz.id = id;
tz.pos = FindPre(z[id].st - T);
long long Tm = calc(id, tz.pos, T);
pq.push(make_pair(Tm, tz));
}
} else {
people[1].insert(make_pair(z[id].st, id));
if (!toilets.empty()) {
op tz; tz.opt = 3;
tz.id = id;
tz.pos = FindNxt(z[id].st + T);
long long Tm = calc(id, tz.pos, T);
pq.push(make_pair(Tm, tz));
}
}
}
void process(op x) {
toilets.erase(x.pos);
if (z[x.id].dir == -1) {
people[0].erase(make_pair(z[x.id].st, x.id));
} else {
people[1].erase(make_pair(z[x.id].st, x.id));
}
op tmp; tmp.opt = 1, tmp.pos = x.pos;
pq.push(make_pair(T + z[x.id].tm, tmp));
long long pos = x.pos;
if (!people[0].empty()) {
addPeople(FindNext(pos - T));
}
if (!people[1].empty()) {
addPeople(FindPrev(pos + T));
}
}
long long res1[N], res2[N];
signed main() {
int n, m;
scanf("%d%d%lld", &n, &m, &L);
for (int i = 1; i <= m; ++i) {
long long ps;
scanf("%lld", &ps);
active(ps);
}
for (int i = 1; i <= n; ++i) {
long long t; scanf("%lld", &t);
long long ps; scanf("%lld", &ps);
string tdir; cin >> tdir;
int dir = (tdir[0] == '+' ? 1 : -1);
long long tm; scanf("%lld", &tm);
op now;
now.opt = 2, now.id = i;
z[i].st = ((ps - t * dir) % L + L) % L;
z[i].tm = tm;
z[i].dir = dir;
pq.push(make_pair(t, now));
}
memset(res1, -1, sizeof(res1));
while (!pq.empty()) {
T = pq.top().first;
op now = pq.top().second;
pq.pop();
if (now.opt == 1) {
active(now.pos);
} else if (now.opt == 2) {
addPeople(now.id);
} else if (!~res1[now.id] && toilets.find(now.pos) != toilets.end()) {
res1[now.id] = T, res2[now.id] = now.pos;
process(now);
}
}
for (int i = 1; i <= n; ++i) {
printf("%lld %lld\n", res2[i], res1[i]);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7872kb
input:
5 3 45 10 20 30 0 0 + 200 2 5 + 10 20 40 - 100 21 16 + 10 50 0 + 22
output:
20 20 10 7 30 30 10 60 10 105
result:
ok 10 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 7876kb
input:
1 1 1 0 0 0 - 1
output:
0 0
result:
ok 2 number(s): "0 0"
Test #3:
score: 0
Accepted
time: 1ms
memory: 7868kb
input:
5 3 33 3 24 23 12 24 - 9 16 28 - 1 17 27 - 9 19 26 - 5 32 22 - 2
output:
24 12 23 21 3 41 24 21 3 51
result:
ok 10 numbers
Test #4:
score: 0
Accepted
time: 1ms
memory: 7876kb
input:
4 5 6 1 3 4 2 0 2 1 + 2 7 3 + 6 9 0 + 9 10 1 - 6
output:
1 2 3 7 0 9 1 10
result:
ok 8 numbers
Test #5:
score: -100
Wrong Answer
time: 0ms
memory: 6292kb
input:
736 30 100500 99382 85511 67593 53450 55531 9959 37170 57546 52666 62342 50707 71285 65933 19874 2092 100255 23965 83091 45652 64171 100128 19518 21445 96069 79781 52642 37943 95321 97569 69154 0 44619 + 7052 2 72499 + 29247 3 53785 - 35614 5 81887 + 64475 7 8561 + 31641 8 95471 - 22654 9 61040 - 44...
output:
53450 310331 95321 22824 53450 338 67593 186711 23965 718911 95321 158 83091 580958 62342 71243 50707 602820 83091 183 2092 375130 96069 552638 100128 541370 64171 5285 50707 288492 99382 849603 2092 284 85511 720931 55531 713428 53450 483192 69154 5302 83091 155808 57546 351069 2092 231938 85511 60...
result:
wrong answer 31st numbers differ - expected: '45652', found: '99382'