#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll INF = 1e17;
const int NMAX = 1e5 + 5;
int m, n;
ll A[NMAX], B[NMAX], C[NMAX], D[NMAX];
ll dpst[NMAX], dpdr[NMAX];
void normalizare() {
// normalizez 1, A, B, C, n
set <int> tot;
tot.insert(1); tot.insert(n);
for (int i = 1; i <= m; i++) {
tot.insert(A[i]);
tot.insert(B[i]);
tot.insert(C[i]);
}
map <int, int> nou;
int curr = 0;
for (auto x: tot)
nou[x] = ++curr;
for (int i = 1; i <= m; i++) {
A[i] = nou[A[i]];
B[i] = nou[B[i]];
C[i] = nou[C[i]];
}
}
int main()
{
cin >> m >> n;
for (int i = 1; i <= m; i++) {
cin >> A[i] >> B[i] >> C[i] >> D[i];
}
normalizare();
if (A[1] == 1)
dpst[1] = D[1];
else
dpst[1] = INF;
if (B[1] == n)
dpdr[1] = D[1];
else
dpdr[1] = INF;
for (int i = 2; i <= n; i++) {
// dpst[i] = min{dpst[j] + d[i], cu C[j] intre A[i] si B[i]}
dpst[i] = INF;
if (A[i] == 1)
dpst[i] = D[i];
else for (int j = i - 1; j >= 1; j--)
if (A[i] <= C[j] && C[j] <= B[i])
dpst[i] = min(dpst[i], dpst[j] + D[i]);
dpdr[i] = INF;
if (B[i] == n)
dpdr[i] = D[i];
else for (int j = i - 1; j >= 1; j--)
if (A[i] <= C[j] && C[j] <= B[i])
dpdr[i] = min(dpdr[i], dpdr[j] + D[i]);
}
ll ans = INF;
for (int i = 1; i <= n; i++)
ans = min(ans, dpst[i] + dpdr[i] - D[i]);
ans < INF ? cout << ans : cout << -1;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |