oj.uz

답안 #508741

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
508741 2022-01-13T16:53:00 Z Jeff12345121 Pinball (JOI14_pinball) C++14
29 / 100
 58 ms 12492 KB 
#include <bits/stdc++.h>
#define in cin
#define out cout
#define ll long long
using namespace std;

//ifstream in("in.in");
//ofstream out("out.out");

struct device {
    int l, r, hole, cost;
};
vector<device> devices, sortDevices;
const int nmax = 605;
const ll inf = (1LL << 60);
int n, m;
ll dp[2][nmax][nmax];
void minSelf(ll &a, ll b) {
    if (b < a) {
        a = b;
    }
}
set<int> positions;
unordered_map<int, int> realToNorm, normToReal;
int32_t main() {
    in >> n >> m;
    if (m == 1) {
        out << "0\n";
        return 0;
    }
    devices.resize(n + 1);
    sortDevices.resize(n + 1);
    for (int i = 1; i <= n; i++) {
        int l, r, hole, cost;
        in >> l >> r >> hole >> cost;
        devices[i] = {l, r, hole, cost};
        sortDevices[i] = {l, r, hole, cost};
        positions.insert(l);
        positions.insert(r);
        positions.insert(hole);
    }

    sort(sortDevices.begin() + 1, sortDevices.end(), [&](device x, device y) {
        return x.l < y.l;
    });
    int r = 1;
    for (int i = 1; i <= n; i++) {
        if (sortDevices[i].l > r) {
            out << "-1\n";
            return 0;
        }
        r = max(r, sortDevices[i].r);
    }
    if (r < m) {
        out << "-1\n";
        return 0;
    }

    int nr = 0;
    for (auto k : positions) {
        nr++;
        realToNorm[k] = nr;
        normToReal[nr] = k;
    }

    for (int i = 1; i <= n; i++) {
        devices[i].l = realToNorm[devices[i].l];
        devices[i].r = realToNorm[devices[i].r];
        devices[i].hole = realToNorm[devices[i].hole];
    }
    m = nr;

    /// dp[i][l][r] = using only devices i...n, we have extended the road for the interval
    /// l - r. sum will be in dp[1][1..m]
    for (int i = 0; i <= 1; i++) {
        for (int l = 0; l <= m; l++) {
            for (int r = 0; r <= m; r++) {
                dp[i][l][r] = inf;
            }
        }
    }
    for (int i = m; i >= 1; i--) {
        dp[(n + 1) % 2][i][i] = 0;
    }
    for (int i = n; i >= 1; i--) {
        for (int l = 1; l <= m; l++) {
            for (int r = l; r <= m; r++) {
                minSelf(dp[i % 2][l][r], dp[(i + 1) % 2][l][r]);
                if (dp[(i + 1) % 2][l][r] == inf) continue;

                if (l <= devices[i].hole && devices[i].hole <= r) {
                    int newL = min(l, devices[i].l);
                    int newR = max(r, devices[i].r);
                    minSelf(dp[i % 2][newL][newR], dp[(i + 1) % 2][l][r] + devices[i].cost);
                    minSelf(dp[i % 2][l][r], dp[(i + 1) % 2][l][r]);
                }
            }
        }
    }
    if (dp[1][1][m] == inf) {
        out << "-1\n";
    } else {
        out << dp[1][1][m] << "\n";
    }
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 8 ms 2220 KB Output is correct
11 Correct 13 ms 2852 KB Output is correct
12 Correct 46 ms 6064 KB Output is correct
13 Correct 47 ms 6084 KB Output is correct
14 Correct 58 ms 5964 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 8 ms 2220 KB Output is correct
11 Correct 13 ms 2852 KB Output is correct
12 Correct 46 ms 6064 KB Output is correct
13 Correct 47 ms 6084 KB Output is correct
14 Correct 58 ms 5964 KB Output is correct
15 Correct 2 ms 1100 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Runtime error 10 ms 12492 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 8 ms 2220 KB Output is correct
11 Correct 13 ms 2852 KB Output is correct
12 Correct 46 ms 6064 KB Output is correct
13 Correct 47 ms 6084 KB Output is correct
14 Correct 58 ms 5964 KB Output is correct
15 Correct 2 ms 1100 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Runtime error 10 ms 12492 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -