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Submission #682614

# Submission time Handle Problem Language Result Execution time Memory
682614 2023-01-16T15:28:39 Z TS_2392 Toll (BOI17_toll) C++14
100 / 100
 193 ms 136652 KB 
#include <bits/stdc++.h>
#define fileIO(name) if(fopen(name".inp", "r")) {freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout);}
#define SPEED ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0)

#define ctz(x) __builtin_ctz(x)
#define rall(x) (x).rbegin(), (x).rend()
#define all(x) (x).begin(), (x).end()
#define sqr(x) (x) * (x)

#define eb emplace_back
#define epl emplace

#define lwb lower_bound
#define upb upper_bound

#define mp make_pair
#define fi first
#define se second

using namespace std;

typedef long long ll;
typedef long double ldb;
typedef unsigned int uint;
typedef unsigned long long ull;

typedef pair<ll, ll> pll;
typedef pair<ll, int> pli;
typedef pair<int, ll> pil;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;

template<class T1, class T2> bool minimize(T1 &a, T2 b){
    if(a > b){a = b; return true;} return false;
}
template<class T1, class T2> bool maximize(T1 &a, T2 b){
    if(a < b){a = b; return true;} return false;
}
const int N = 5e4 + 3;
const ll oo = 1e10;
int k, m, n, qsn;
ll d[N * 5][17][5];
int real_id(int i, int j){
    return i * k + j;
}
int main(){
    SPEED; fileIO("");
    cin >> k >> n >> m >> qsn;
    for(int u = 0; u < 4 * n; ++u){
        for(int i = 0; i < 17; ++i){
            for(int j = 0; j < k; ++j) d[u][i][j] = oo;
        }
    }
    for(int i = 1; i <= m; ++i){
        int u, v;
        cin >> u >> v >> d[u][0][v % k];
    }
    for(int i = 1; i < 17; ++i) for(int u = 0; u < n; ++u){
        for(int j = 0; j < k; ++j) for(int jj = 0; jj < k; ++jj){
            minimize(d[u][i][j], d[u][i - 1][jj] + d[real_id(u / k + (1 << i - 1), jj)][i - 1][j]);
        }
    }
    while(qsn--){
        int x, y, prefloor, lastfloor;
        cin >> x >> y;
        prefloor = x / k, lastfloor = y / k;
        if(prefloor < lastfloor){
            int delta = lastfloor - prefloor, fstbit = ctz(delta), msk = 0;
            delta -= 1 << fstbit; prefloor += 1 << fstbit;
            ll dist[2][k];
            for(int i = 0; i < k; ++i) dist[msk][i] = d[x][fstbit][i];
            for(int curbit = 0; curbit < 17; ++curbit) if(delta >> curbit & 1){
                msk ^= 1;
                for(int i = 0; i < k; ++i){
                    dist[msk][i] = oo;
                    for(int ii = 0; ii < k; ++ii){
                        minimize(dist[msk][i], dist[msk ^ 1][ii] + d[real_id(prefloor, ii)][curbit][i]);
                    }
                }
                prefloor += 1 << curbit;
            }
            cout << (dist[msk][y % k] < oo ? dist[msk][y % k] : -1) << '\n';
        }
        else cout << -1 << '\n';
    }
    return 0;
}

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:60:78: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   60 |             minimize(d[u][i][j], d[u][i - 1][jj] + d[real_id(u / k + (1 << i - 1), jj)][i - 1][j]);
      |                                                                            ~~^~~
toll.cpp:2:57: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define fileIO(name) if(fopen(name".inp", "r")) {freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout);}
      |                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:47:12: note: in expansion of macro 'fileIO'
   47 |     SPEED; fileIO("");
      |            ^~~~~~
toll.cpp:2:90: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define fileIO(name) if(fopen(name".inp", "r")) {freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout);}
      |                                                                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:47:12: note: in expansion of macro 'fileIO'
   47 |     SPEED; fileIO("");
      |            ^~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 133436 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 2 ms 2900 KB Output is correct
6 Correct 2 ms 2900 KB Output is correct
7 Correct 3 ms 2900 KB Output is correct
8 Correct 88 ms 133416 KB Output is correct
9 Correct 88 ms 133432 KB Output is correct
10 Correct 67 ms 133404 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 133392 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 5 ms 3028 KB Output is correct
8 Correct 8 ms 3084 KB Output is correct
9 Correct 78 ms 134236 KB Output is correct
10 Correct 151 ms 135636 KB Output is correct
11 Correct 116 ms 135064 KB Output is correct
12 Correct 134 ms 134668 KB Output is correct
13 Correct 130 ms 82664 KB Output is correct
14 Correct 95 ms 81600 KB Output is correct
15 Correct 111 ms 81360 KB Output is correct
16 Correct 114 ms 81356 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 2900 KB Output is correct
7 Correct 2 ms 3028 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 5 ms 3044 KB Output is correct
10 Correct 89 ms 134092 KB Output is correct
11 Correct 121 ms 134872 KB Output is correct
12 Correct 136 ms 135544 KB Output is correct
13 Correct 151 ms 135800 KB Output is correct
14 Correct 161 ms 135128 KB Output is correct
15 Correct 105 ms 81312 KB Output is correct
16 Correct 105 ms 81332 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 2900 KB Output is correct
7 Correct 2 ms 3028 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 5 ms 3044 KB Output is correct
10 Correct 89 ms 134092 KB Output is correct
11 Correct 121 ms 134872 KB Output is correct
12 Correct 136 ms 135544 KB Output is correct
13 Correct 151 ms 135800 KB Output is correct
14 Correct 161 ms 135128 KB Output is correct
15 Correct 105 ms 81312 KB Output is correct
16 Correct 105 ms 81332 KB Output is correct
17 Correct 122 ms 134900 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 3028 KB Output is correct
24 Correct 3 ms 3032 KB Output is correct
25 Correct 5 ms 3028 KB Output is correct
26 Correct 5 ms 3028 KB Output is correct
27 Correct 77 ms 134216 KB Output is correct
28 Correct 162 ms 135588 KB Output is correct
29 Correct 146 ms 135756 KB Output is correct
30 Correct 138 ms 135172 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 133436 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 2 ms 2900 KB Output is correct
6 Correct 2 ms 2900 KB Output is correct
7 Correct 3 ms 2900 KB Output is correct
8 Correct 88 ms 133416 KB Output is correct
9 Correct 88 ms 133432 KB Output is correct
10 Correct 67 ms 133404 KB Output is correct
11 Correct 108 ms 133392 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 5 ms 3028 KB Output is correct
18 Correct 8 ms 3084 KB Output is correct
19 Correct 78 ms 134236 KB Output is correct
20 Correct 151 ms 135636 KB Output is correct
21 Correct 116 ms 135064 KB Output is correct
22 Correct 134 ms 134668 KB Output is correct
23 Correct 130 ms 82664 KB Output is correct
24 Correct 95 ms 81600 KB Output is correct
25 Correct 111 ms 81360 KB Output is correct
26 Correct 114 ms 81356 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 2900 KB Output is correct
33 Correct 2 ms 3028 KB Output is correct
34 Correct 4 ms 3028 KB Output is correct
35 Correct 5 ms 3044 KB Output is correct
36 Correct 89 ms 134092 KB Output is correct
37 Correct 121 ms 134872 KB Output is correct
38 Correct 136 ms 135544 KB Output is correct
39 Correct 151 ms 135800 KB Output is correct
40 Correct 161 ms 135128 KB Output is correct
41 Correct 105 ms 81312 KB Output is correct
42 Correct 105 ms 81332 KB Output is correct
43 Correct 122 ms 134900 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 328 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 3 ms 3028 KB Output is correct
50 Correct 3 ms 3032 KB Output is correct
51 Correct 5 ms 3028 KB Output is correct
52 Correct 5 ms 3028 KB Output is correct
53 Correct 77 ms 134216 KB Output is correct
54 Correct 162 ms 135588 KB Output is correct
55 Correct 146 ms 135756 KB Output is correct
56 Correct 138 ms 135172 KB Output is correct
57 Correct 193 ms 136652 KB Output is correct
58 Correct 89 ms 134304 KB Output is correct
59 Correct 127 ms 135156 KB Output is correct