#include <bits/stdc++.h>
using namespace std;
const int MXN = 100 * 1000 + 3;
long long tree[2][(3 * MXN) << 2];
map<int, long long> compress;
int A[MXN], B[MXN], C[MXN], D[MXN];
int N, M;
void update(int v, int tl, int tr, int pos, long long val, int idx) {
if(tl == tr)
return tree[idx][v] = min(tree[idx][v], val), void();
int tm = (tl + tr) >> 1;
if(pos <= tm)
update(v << 1, tl, tm, pos, val, idx);
else
update(v << 1|1, tm + 1, tr, pos, val, idx);
tree[idx][v] = min(tree[idx][v << 1], tree[idx][v << 1|1]);
}
void upd(int pos, long long val, int idx) {
update(1, 1, 3 * M, pos, val, idx);
}
long long query(int v, int tl, int tr, int l, int r, int idx) {
if(l > r) return tree[0][0];
if(l <= tl && tr <= r)
return tree[idx][v];
int tm = (tl + tr) >> 1;
return min(query(v << 1, tl, tm, l, min(tm, r), idx),
query(v << 1|1, tm + 1, tr, max(tm + 1, l), r, idx));
}
long long query(int l, int r, int idx) {
return query(1, 1, 3 * M, l, r, idx);
}
signed main() {
std::ios::sync_with_stdio(0);
std::cout.tie(0);
std::cin.tie(0);
cin >> M >> N;
compress[1] = compress[N] = 0;
for(int i = 1; i <= M; ++i) {
cin >> A[i] >> B[i] >> C[i] >> D[i];
compress[A[i]] = compress[B[i]] = compress[C[i]] = 0;
}
int t = 0;
for(auto &[u, v] : compress)
v = ++t;
memset(tree, 0x2f, sizeof tree);
long long ans = tree[0][0];
upd(compress[1], 0, 0);
upd(compress[N], 0, 1);
for(int i = 1; i <= M; i++) {
long long prefix = query(A[i], B[i], 0);
long long suffix = query(A[i], B[i], 1);
ans = min(ans, prefix + D[i] + suffix);
upd(C[i], prefix + D[i], 0);
upd(C[i], suffix + D[i], 1);
}
cout << (ans >= tree[0][0] ? -1 : ans) << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9 ms |
19088 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9 ms |
19088 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9 ms |
19088 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9 ms |
19088 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
