oj.uz

답안 #508733

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
508733 2022-01-13T16:44:17 Z Jeff12345121 Pinball (JOI14_pinball) C++14
11 / 100
 238 ms 524292 KB 
#include <bits/stdc++.h>
#define in cin
#define out cout
#define int 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, inf = (1LL << 60);
int n, m, dp[205][nmax][nmax];
void minSelf(int &a, int 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 <= n + 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][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][l][r], dp[i + 1][l][r]);
                if (dp[i + 1][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][newL][newR], dp[i + 1][l][r] + devices[i].cost);
                    minSelf(dp[i][l][r], dp[i + 1][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 1 ms 460 KB Output is correct
2 Correct 1 ms 844 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1612 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 844 KB Output is correct

Subtask #2
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 844 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1612 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 844 KB Output is correct
9 Correct 35 ms 75768 KB Output is correct
10 Correct 95 ms 192552 KB Output is correct
11 Correct 132 ms 256716 KB Output is correct
12 Runtime error 238 ms 524292 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 844 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1612 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 844 KB Output is correct
9 Correct 35 ms 75768 KB Output is correct
10 Correct 95 ms 192552 KB Output is correct
11 Correct 132 ms 256716 KB Output is correct
12 Runtime error 238 ms 524292 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 844 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1612 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 844 KB Output is correct
9 Correct 35 ms 75768 KB Output is correct
10 Correct 95 ms 192552 KB Output is correct
11 Correct 132 ms 256716 KB Output is correct
12 Runtime error 238 ms 524292 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -