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*/
#include <iostream>
#include <complex>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <numeric>
#include <cstring>
#include <ctime>
#include <cstdlib>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <cmath>
#include <bitset>
#include <cassert>
#include <queue>
#include <stack>
#include <deque>
#include <random>
using namespace std;
template<typename T1, typename T2>inline void chkmin(T1 &x, T2 y) { if (x > y) x = y; }
template<typename T1, typename T2>inline void chkmax(T1 &x, T2 y) { if (x < y) x = y; }
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
#define left left224
#define right right224
#define next next224
#define rank rank224
#define prev prev224
#define y1 y1224
#define read(FILENAME) freopen((FILENAME + ".in").c_str(), "r", stdin)
#define write(FILENAME) freopen((FILENAME + ".out").c_str(), "w", stdout)
#define files(FILENAME) read(FILENAME), write(FILENAME)
#define pb push_back
#define mp make_pair
const string FILENAME = "input";
const int MAXN = 300228;
int m, n;
int a[MAXN], b[MAXN], c[MAXN], d[MAXN];
struct rmq
{
vector<long long> d;
int ss = 1;
void init(int l) {
while (ss < l) {
ss <<= 1;
}
d.resize(2 * ss);
for (int i = 0; i < 2 * ss; i++) {
d[i] = 1e18;
}
}
void upd(int i, long long val) {
i += ss;
chkmin(d[i], val);
while (i >> 1 > 0) {
i >>= 1;
d[i] = min(d[i * 2], d[i * 2 + 1]);
}
}
long long getmin(int l, int r) {
long long res = 1e18;
l += ss;
r += ss;
while (l <= r) {
if (l & 1) {
chkmin(res, d[l]);
l++;
}
if (!(r & 1)) {
chkmin(res, d[r]);
r--;
}
l >>= 1;
r >>= 1;
}
return res;
}
};
rmq l, r;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
//read(FILENAME);
cin >> m >> n;
vector<int> vx;
vx.pb(1);
vx.pb(n);
for (int i = 0; i < m; i++) {
cin >> a[i] >> b[i] >> c[i] >> d[i];
vx.pb(a[i]);
vx.pb(b[i]);
vx.pb(c[i]);
}
sort(all(vx));
vx.resize(distance(vx.begin(), unique(all(vx))));
for (int i = 0; i < m; i++) {
a[i] = lower_bound(all(vx), a[i]) - vx.begin();
b[i] = lower_bound(all(vx), b[i]) - vx.begin();
c[i] = lower_bound(all(vx), c[i]) - vx.begin();
}
l.init(sz(vx));
r.init(sz(vx));
l.upd(0, 0);
r.upd(sz(vx) - 1, 0);
long long ans = 4e18;
for (int i = 0; i < m; i++) {
long long f = l.getmin(a[i], b[i]);
long long f1 = r.getmin(a[i], b[i]);
chkmin(ans, f + f1 + d[i]);
l.upd(c[i], f + d[i]);
r.upd(c[i], f1 + d[i]);
}
if (ans > 1000000000000000000LL) {
ans = -1;
}
cout << ans << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
380 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
380 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
3 ms |
376 KB |
Output is correct |
17 |
Correct |
3 ms |
504 KB |
Output is correct |
18 |
Correct |
3 ms |
376 KB |
Output is correct |
19 |
Correct |
3 ms |
504 KB |
Output is correct |
20 |
Correct |
3 ms |
504 KB |
Output is correct |
21 |
Correct |
3 ms |
504 KB |
Output is correct |
22 |
Correct |
3 ms |
636 KB |
Output is correct |
23 |
Correct |
3 ms |
632 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
380 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
3 ms |
376 KB |
Output is correct |
17 |
Correct |
3 ms |
504 KB |
Output is correct |
18 |
Correct |
3 ms |
376 KB |
Output is correct |
19 |
Correct |
3 ms |
504 KB |
Output is correct |
20 |
Correct |
3 ms |
504 KB |
Output is correct |
21 |
Correct |
3 ms |
504 KB |
Output is correct |
22 |
Correct |
3 ms |
636 KB |
Output is correct |
23 |
Correct |
3 ms |
632 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
25 |
Correct |
17 ms |
2040 KB |
Output is correct |
26 |
Correct |
43 ms |
4084 KB |
Output is correct |
27 |
Correct |
124 ms |
9072 KB |
Output is correct |
28 |
Correct |
125 ms |
7536 KB |
Output is correct |
29 |
Correct |
91 ms |
8148 KB |
Output is correct |
30 |
Correct |
150 ms |
8036 KB |
Output is correct |
31 |
Correct |
198 ms |
15336 KB |
Output is correct |
32 |
Correct |
197 ms |
11264 KB |
Output is correct |
33 |
Correct |
26 ms |
3832 KB |
Output is correct |
34 |
Correct |
90 ms |
12016 KB |
Output is correct |
35 |
Correct |
140 ms |
23656 KB |
Output is correct |
36 |
Correct |
214 ms |
23644 KB |
Output is correct |
37 |
Correct |
182 ms |
23628 KB |
Output is correct |
38 |
Correct |
208 ms |
23644 KB |
Output is correct |