oj.uz

답안 #908780

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
908780 2024-01-16T20:41:55 Z tvladm2009 Pinball (JOI14_pinball) C++17
100 / 100
 174 ms 31920 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
const int N = 1e5 + 7;
const ll INF = 1e18;
int rows, cols;
 
struct kek {
    ll l;
    ll r;
    ll c;
    ll d;
};
 
kek a[N];
ll aib1[3 * N], aib2[3 * N];
ll dp1[N], dp2[N];
 
void update1(int i, ll val) {
    for (; i < 3 * N; i += i & -i) aib1[i] = min(aib1[i], val);
}
 
void update2(int i, ll val) {
    for (; i >= 1; i -= i & -i) aib2[i] = min(aib2[i], val);
}
 
ll query1(int i) {
    ll ans = INF;
    for (; i >= 1; i -= i & -i) ans = min(ans, aib1[i]);
    return ans;
}
 
ll query2(int i) {
    ll ans = INF;
    for (; i < 3 * N; i += i & -i) ans = min(ans, aib2[i]);
    return ans;
}
 
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> rows >> cols;
    for (int i = 1; i <= rows; ++i) cin >> a[i].l >> a[i].r >> a[i].c >> a[i].d; 
    bool ok = 0;
    for (int i = 1; i <= rows; ++i) ok |= (a[i].l == 1);
    if (!ok) {
        cout << "-1\n";
        return 0;
    }
    ok = 0;
    for (int i = 1; i <= rows; ++i) ok |= (a[i].r == cols);
    if (!ok) {
        cout << "-1\n";
        return 0;
    }
    {
        vector<vector<int>> vals;
        for (int i = 1; i <= rows; ++i) {
            vals.push_back({a[i].l, 0, i});
            vals.push_back({a[i].r, 1, i});
            vals.push_back({a[i].c, 2, i});
        }
        sort(vals.begin(), vals.end());
        //cout << "DEBUG: " << "\n";
        //for (auto it : vals) {
            //cout << it[0] << " " << it[1] << " " << it[2] << "\n";
        //}
        int cnt = 1;
        for (int i = 0; i < vals.size(); ++i) {
            if (i > 0 && vals[i][0] != vals[i - 1][0]) ++cnt;
            auto it = vals[i];
            if (it[1] == 0) a[it[2]].l = cnt; 
            if (it[1] == 1) a[it[2]].r = cnt;
            if (it[1] == 2) a[it[2]].c = cnt;
        }
    }
    //cout << "DEBUG: " << "\n";
    //for (int i = 1; i <= rows; ++i) {
        //cout << a[i].l << " " << a[i].r << " " << a[i].c << "\n";
    //}
    ll mx = 0;
    for (int i = 1; i <= rows; ++i) {
        mx = max(mx, a[i].l);
        mx = max(mx, a[i].r);
        mx = max(mx, a[i].c);
        dp1[i] = INF;
        dp2[i] = INF;
    }
    for (int i = 1; i < 3 * N; ++i) {
        aib1[i] = INF;
        aib2[i] = INF;
    }
    for (int i = 1; i <= rows; ++i) {
        if (a[i].l == 1) dp1[i] = a[i].d;
        if (a[i].r == mx) dp2[i] = a[i].d;
    }
    //for (int i = 1; i <= rows; ++i) cout << dp1[i] << " " << dp2[i] << "\n";
    //cout << "-------\n";
    ll ans = INF;
    for (int i = 1; i <= rows; ++i) {
        //if (i == 3) {
            //cout << query2(a[i].l) << "\n"; 
        //}
        dp1[i] = min(dp1[i], query2(a[i].l) + a[i].d);
        dp2[i] = min(dp2[i], query1(a[i].r) + a[i].d);
        //cout << "UPDATAM " << a[i].c << " " << dp1[i] << "\n";
        update2(a[i].c, dp1[i]);
        update1(a[i].c, dp2[i]);
        ans = min(ans, dp1[i] + dp2[i] - a[i].d);
        //cout << dp1[i] << " " << dp2[i] << "\n";
    }
    if (ans == INF) ans = -1;
    cout << ans << endl;
    return 0;
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:61:34: warning: narrowing conversion of 'a[i].kek::l' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   61 |             vals.push_back({a[i].l, 0, i});
      |                             ~~~~~^
pinball.cpp:61:34: warning: narrowing conversion of 'a[i].kek::l' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
pinball.cpp:62:34: warning: narrowing conversion of 'a[i].kek::r' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   62 |             vals.push_back({a[i].r, 1, i});
      |                             ~~~~~^
pinball.cpp:62:34: warning: narrowing conversion of 'a[i].kek::r' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
pinball.cpp:63:34: warning: narrowing conversion of 'a[i].kek::c' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   63 |             vals.push_back({a[i].c, 2, i});
      |                             ~~~~~^
pinball.cpp:63:34: warning: narrowing conversion of 'a[i].kek::c' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
pinball.cpp:71:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         for (int i = 0; i < vals.size(); ++i) {
      |                         ~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6500 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 2 ms 6608 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6500 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 2 ms 6608 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6500 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 2 ms 6608 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 3 ms 6744 KB Output is correct
18 Correct 3 ms 6748 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 3 ms 6748 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 3 ms 6656 KB Output is correct
23 Correct 2 ms 6748 KB Output is correct
24 Correct 3 ms 6700 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6500 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 2 ms 6608 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 3 ms 6744 KB Output is correct
18 Correct 3 ms 6748 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 3 ms 6748 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 3 ms 6656 KB Output is correct
23 Correct 2 ms 6748 KB Output is correct
24 Correct 3 ms 6700 KB Output is correct
25 Correct 11 ms 9808 KB Output is correct
26 Correct 29 ms 12012 KB Output is correct
27 Correct 79 ms 18840 KB Output is correct
28 Correct 141 ms 30968 KB Output is correct
29 Correct 54 ms 17004 KB Output is correct
30 Correct 146 ms 31232 KB Output is correct
31 Correct 174 ms 31080 KB Output is correct
32 Correct 132 ms 30720 KB Output is correct
33 Correct 18 ms 11392 KB Output is correct
34 Correct 63 ms 16900 KB Output is correct
35 Correct 92 ms 31920 KB Output is correct
36 Correct 143 ms 30424 KB Output is correct
37 Correct 121 ms 30464 KB Output is correct
38 Correct 126 ms 30152 KB Output is correct