#include <bits/stdc++.h>
using namespace std;
#define int long long
int INF = 1e18;
signed main() {
ios::sync_with_stdio(0), cin.tie(0);
int N, M; cin >> N >> M;
array<int, 4> a[M];
int c[M], p {};
for(auto &[R, L, T, C] : a) {
cin >> T >> L >> R >> C;
c[p++] = T;
}
sort(a, a + M);
sort(c, c + M);
set<array<int, 2>> s[2][M + 1];
int ans = INF;
for(auto [R, L, T, C] : a) {
int cur = L < 2 ? 0 : INF, t = lower_bound(c, c + M, T) - c;
for(int i = 0; i < 2; ++i) {
int f = L + (i ? T : -T) - 1;
for(int k = (i ? t + 1 : M - t); k > 0; k -= k&-k) {
if(!empty(s[i][k]) && f <= (*--end(s[i][k]))[0])
cur = min(cur, (*s[i][k].lower_bound({f}))[1]);
}
}
cur = min(cur + C, INF);
if(R == N) ans = min(ans, cur);
for(int i = 0; i < 2; ++i) {
int f = R + (i ? T : -T);
for(int k = (i ? t + 1 : M - t); k <= M; k += k&-k) {
auto j = s[i][k].insert({f, cur}).first;
if(next(j) != end(s[i][k]) && (*next(j))[1] <= cur)
s[i][k].erase(j);
else {
while(j != begin(s[i][k]) && (*prev(j))[1] >= cur)
s[i][k].erase(prev(j));
}
}
}
}
cout << (ans == INF ? -1 : ans);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
740 ms |
129536 KB |
Output is correct |
2 |
Correct |
581 ms |
62396 KB |
Output is correct |
3 |
Correct |
546 ms |
72172 KB |
Output is correct |
4 |
Correct |
549 ms |
72288 KB |
Output is correct |
5 |
Correct |
493 ms |
18136 KB |
Output is correct |
6 |
Correct |
408 ms |
18928 KB |
Output is correct |
7 |
Correct |
482 ms |
38196 KB |
Output is correct |
8 |
Correct |
263 ms |
17840 KB |
Output is correct |
9 |
Correct |
151 ms |
16816 KB |
Output is correct |
10 |
Correct |
116 ms |
16744 KB |
Output is correct |
11 |
Correct |
432 ms |
73028 KB |
Output is correct |
12 |
Correct |
425 ms |
73424 KB |
Output is correct |
13 |
Correct |
273 ms |
17596 KB |
Output is correct |
14 |
Correct |
238 ms |
17628 KB |
Output is correct |
15 |
Correct |
373 ms |
20044 KB |
Output is correct |
16 |
Correct |
332 ms |
20288 KB |
Output is correct |
17 |
Correct |
329 ms |
17708 KB |
Output is correct |
18 |
Correct |
149 ms |
16016 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
740 ms |
129536 KB |
Output is correct |
2 |
Correct |
581 ms |
62396 KB |
Output is correct |
3 |
Correct |
546 ms |
72172 KB |
Output is correct |
4 |
Correct |
549 ms |
72288 KB |
Output is correct |
5 |
Correct |
493 ms |
18136 KB |
Output is correct |
6 |
Correct |
408 ms |
18928 KB |
Output is correct |
7 |
Correct |
482 ms |
38196 KB |
Output is correct |
8 |
Correct |
263 ms |
17840 KB |
Output is correct |
9 |
Correct |
151 ms |
16816 KB |
Output is correct |
10 |
Correct |
116 ms |
16744 KB |
Output is correct |
11 |
Correct |
432 ms |
73028 KB |
Output is correct |
12 |
Correct |
425 ms |
73424 KB |
Output is correct |
13 |
Correct |
273 ms |
17596 KB |
Output is correct |
14 |
Correct |
238 ms |
17628 KB |
Output is correct |
15 |
Correct |
373 ms |
20044 KB |
Output is correct |
16 |
Correct |
332 ms |
20288 KB |
Output is correct |
17 |
Correct |
329 ms |
17708 KB |
Output is correct |
18 |
Correct |
149 ms |
16016 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
21 |
Halted |
0 ms |
0 KB |
- |