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Submission #209762

# Submission time Handle Problem Language Result Execution time Memory
209762 2020-03-15T13:50:48 Z Alexa2001 Solar Storm (NOI20_solarstorm) C++17
100 / 100
 221 ms 113248 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
const int Nmax = 1e6 + 5, lg = 20;

// 15 : 38

int go[lg+1][Nmax], n, S, deploy[Nmax];
ll coef[Nmax], d[Nmax], K;


const int bsize = 1 << 18;
char buffer[bsize+2]; int cursor;


static inline void init_read()
{
    fread(buffer, 1, bsize, stdin), cursor = 0;
}

template<typename T>
void read(T &x)
{
    x = 0;
    while(!isdigit(buffer[cursor]))
    {
        ++cursor;
        if(cursor == bsize) init_read();
    }
    while(isdigit(buffer[cursor]))
    {
        x = x * 10 + buffer[cursor] - '0';
        ++cursor;
        if(cursor == bsize) init_read();
    }
}

int main()
{
   // freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

    init_read();
    read(n); read(S); read(K);

    int i;
    for(i=2; i<=n; ++i)
    {
        read(d[i]);
        d[i] += d[i-1];
    }

    for(i=1; i<=n; ++i) read(coef[i]), coef[i] += coef[i-1];

    d[n+1] = 1e18;

    int j, k;
    j = 1; k = 2;

    for(i=1; i<=n; ++i)
    {
        while(d[j+1] - d[i] <= K) ++j;
        while(d[k] - d[j] <= K) ++k;

        go[0][i] = k;
        deploy[i] = j;
    }

    go[0][n+1] = n+1;

    for(j=1; j<=lg; ++j)
        for(i=1; i<=n+1; ++i)
            go[j][i] = go[j-1][go[j-1][i]];

    ll ans = -1;
    int start, finish;

    for(i=1; i<=n; ++i)
    {
        int to = i;

        for(j=0; j<=lg; ++j)
            if(S & (1<<j))
                to = go[j][to];

        ll curr = coef[to-1] - coef[i-1];

        if(curr > ans)
            ans = curr, start = i, finish = to - 1;
    }

    vector<int> Ans;

    while(start <= finish)
    {
        Ans.push_back(deploy[start]);
        start = go[0][start];
    }

    cout << Ans.size() << '\n';
    for(auto it : Ans) cout << it << ' ';

    return 0;
}

Compilation message

SolarStorm.cpp: In function 'void init_read()':
SolarStorm.cpp:20:35: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     fread(buffer, 1, bsize, stdin), cursor = 0;
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
SolarStorm.cpp: In function 'int main()':
SolarStorm.cpp:96:17: warning: 'finish' may be used uninitialized in this function [-Wmaybe-uninitialized]
     while(start <= finish)
           ~~~~~~^~~~~~~~~
SolarStorm.cpp:99:15: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
         start = go[0][start];
         ~~~~~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 556 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1016 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 1400 KB Output is correct
7 Correct 6 ms 1528 KB Output is correct
8 Correct 6 ms 1656 KB Output is correct
9 Correct 6 ms 1144 KB Output is correct
10 Correct 6 ms 1656 KB Output is correct
11 Correct 7 ms 1656 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 118 ms 87928 KB Output is correct
2 Correct 73 ms 56184 KB Output is correct
3 Correct 78 ms 60152 KB Output is correct
4 Correct 88 ms 65656 KB Output is correct
5 Correct 99 ms 76792 KB Output is correct
6 Correct 131 ms 102136 KB Output is correct
7 Correct 88 ms 67704 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 556 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1016 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 1400 KB Output is correct
7 Correct 6 ms 1528 KB Output is correct
8 Correct 6 ms 1656 KB Output is correct
9 Correct 6 ms 1144 KB Output is correct
10 Correct 6 ms 1656 KB Output is correct
11 Correct 7 ms 1656 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 118 ms 87928 KB Output is correct
14 Correct 73 ms 56184 KB Output is correct
15 Correct 78 ms 60152 KB Output is correct
16 Correct 88 ms 65656 KB Output is correct
17 Correct 99 ms 76792 KB Output is correct
18 Correct 131 ms 102136 KB Output is correct
19 Correct 88 ms 67704 KB Output is correct
20 Correct 80 ms 56056 KB Output is correct
21 Correct 96 ms 68600 KB Output is correct
22 Correct 108 ms 81272 KB Output is correct
23 Correct 115 ms 83832 KB Output is correct
24 Correct 109 ms 75768 KB Output is correct
25 Correct 107 ms 75768 KB Output is correct
26 Correct 81 ms 56568 KB Output is correct
27 Correct 108 ms 72568 KB Output is correct
28 Correct 106 ms 71672 KB Output is correct
29 Correct 140 ms 93048 KB Output is correct
30 Correct 112 ms 76280 KB Output is correct
31 Correct 93 ms 66936 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 88672 KB Output is correct
2 Correct 68 ms 52472 KB Output is correct
3 Correct 68 ms 56056 KB Output is correct
4 Correct 106 ms 80836 KB Output is correct
5 Correct 95 ms 78456 KB Output is correct
6 Correct 109 ms 83064 KB Output is correct
7 Correct 179 ms 108264 KB Output is correct

Subtask #5
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 556 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1016 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 1400 KB Output is correct
7 Correct 6 ms 1528 KB Output is correct
8 Correct 6 ms 1656 KB Output is correct
9 Correct 6 ms 1144 KB Output is correct
10 Correct 6 ms 1656 KB Output is correct
11 Correct 7 ms 1656 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 6 ms 1656 KB Output is correct
14 Correct 6 ms 1400 KB Output is correct
15 Correct 6 ms 1400 KB Output is correct
16 Correct 5 ms 1144 KB Output is correct
17 Correct 6 ms 1400 KB Output is correct
18 Correct 6 ms 1656 KB Output is correct
19 Correct 6 ms 1400 KB Output is correct
20 Correct 6 ms 1272 KB Output is correct
21 Correct 7 ms 1784 KB Output is correct
22 Correct 6 ms 1656 KB Output is correct
23 Correct 6 ms 1656 KB Output is correct
24 Correct 6 ms 1528 KB Output is correct
25 Correct 6 ms 1528 KB Output is correct
26 Correct 6 ms 1528 KB Output is correct
27 Correct 6 ms 1400 KB Output is correct
28 Correct 6 ms 1400 KB Output is correct
29 Correct 6 ms 1400 KB Output is correct
30 Correct 6 ms 1528 KB Output is correct

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 556 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1016 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 1400 KB Output is correct
7 Correct 6 ms 1528 KB Output is correct
8 Correct 6 ms 1656 KB Output is correct
9 Correct 6 ms 1144 KB Output is correct
10 Correct 6 ms 1656 KB Output is correct
11 Correct 7 ms 1656 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 118 ms 87928 KB Output is correct
14 Correct 73 ms 56184 KB Output is correct
15 Correct 78 ms 60152 KB Output is correct
16 Correct 88 ms 65656 KB Output is correct
17 Correct 99 ms 76792 KB Output is correct
18 Correct 131 ms 102136 KB Output is correct
19 Correct 88 ms 67704 KB Output is correct
20 Correct 80 ms 56056 KB Output is correct
21 Correct 96 ms 68600 KB Output is correct
22 Correct 108 ms 81272 KB Output is correct
23 Correct 115 ms 83832 KB Output is correct
24 Correct 109 ms 75768 KB Output is correct
25 Correct 107 ms 75768 KB Output is correct
26 Correct 81 ms 56568 KB Output is correct
27 Correct 108 ms 72568 KB Output is correct
28 Correct 106 ms 71672 KB Output is correct
29 Correct 140 ms 93048 KB Output is correct
30 Correct 112 ms 76280 KB Output is correct
31 Correct 93 ms 66936 KB Output is correct
32 Correct 119 ms 89336 KB Output is correct
33 Correct 96 ms 68600 KB Output is correct
34 Correct 143 ms 94072 KB Output is correct
35 Correct 81 ms 56824 KB Output is correct
36 Correct 85 ms 60920 KB Output is correct
37 Correct 94 ms 67068 KB Output is correct
38 Correct 135 ms 101624 KB Output is correct
39 Correct 97 ms 76408 KB Output is correct
40 Correct 130 ms 102392 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 556 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1016 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 1400 KB Output is correct
7 Correct 6 ms 1528 KB Output is correct
8 Correct 6 ms 1656 KB Output is correct
9 Correct 6 ms 1144 KB Output is correct
10 Correct 6 ms 1656 KB Output is correct
11 Correct 7 ms 1656 KB Output is correct
12 Correct 6 ms 1016 KB Output is correct
13 Correct 118 ms 87928 KB Output is correct
14 Correct 73 ms 56184 KB Output is correct
15 Correct 78 ms 60152 KB Output is correct
16 Correct 88 ms 65656 KB Output is correct
17 Correct 99 ms 76792 KB Output is correct
18 Correct 131 ms 102136 KB Output is correct
19 Correct 88 ms 67704 KB Output is correct
20 Correct 80 ms 56056 KB Output is correct
21 Correct 96 ms 68600 KB Output is correct
22 Correct 108 ms 81272 KB Output is correct
23 Correct 115 ms 83832 KB Output is correct
24 Correct 109 ms 75768 KB Output is correct
25 Correct 107 ms 75768 KB Output is correct
26 Correct 81 ms 56568 KB Output is correct
27 Correct 108 ms 72568 KB Output is correct
28 Correct 106 ms 71672 KB Output is correct
29 Correct 140 ms 93048 KB Output is correct
30 Correct 112 ms 76280 KB Output is correct
31 Correct 93 ms 66936 KB Output is correct
32 Correct 158 ms 88672 KB Output is correct
33 Correct 68 ms 52472 KB Output is correct
34 Correct 68 ms 56056 KB Output is correct
35 Correct 106 ms 80836 KB Output is correct
36 Correct 95 ms 78456 KB Output is correct
37 Correct 109 ms 83064 KB Output is correct
38 Correct 179 ms 108264 KB Output is correct
39 Correct 6 ms 1656 KB Output is correct
40 Correct 6 ms 1400 KB Output is correct
41 Correct 6 ms 1400 KB Output is correct
42 Correct 5 ms 1144 KB Output is correct
43 Correct 6 ms 1400 KB Output is correct
44 Correct 6 ms 1656 KB Output is correct
45 Correct 6 ms 1400 KB Output is correct
46 Correct 6 ms 1272 KB Output is correct
47 Correct 7 ms 1784 KB Output is correct
48 Correct 6 ms 1656 KB Output is correct
49 Correct 6 ms 1656 KB Output is correct
50 Correct 6 ms 1528 KB Output is correct
51 Correct 6 ms 1528 KB Output is correct
52 Correct 6 ms 1528 KB Output is correct
53 Correct 6 ms 1400 KB Output is correct
54 Correct 6 ms 1400 KB Output is correct
55 Correct 6 ms 1400 KB Output is correct
56 Correct 6 ms 1528 KB Output is correct
57 Correct 119 ms 89336 KB Output is correct
58 Correct 96 ms 68600 KB Output is correct
59 Correct 143 ms 94072 KB Output is correct
60 Correct 81 ms 56824 KB Output is correct
61 Correct 85 ms 60920 KB Output is correct
62 Correct 94 ms 67068 KB Output is correct
63 Correct 135 ms 101624 KB Output is correct
64 Correct 97 ms 76408 KB Output is correct
65 Correct 130 ms 102392 KB Output is correct
66 Correct 82 ms 61560 KB Output is correct
67 Correct 155 ms 88680 KB Output is correct
68 Correct 127 ms 62176 KB Output is correct
69 Correct 120 ms 81136 KB Output is correct
70 Correct 86 ms 63864 KB Output is correct
71 Correct 140 ms 101752 KB Output is correct
72 Correct 95 ms 64504 KB Output is correct
73 Correct 118 ms 84216 KB Output is correct
74 Correct 71 ms 52600 KB Output is correct
75 Correct 110 ms 86392 KB Output is correct
76 Correct 84 ms 60408 KB Output is correct
77 Correct 115 ms 80632 KB Output is correct
78 Correct 74 ms 57464 KB Output is correct
79 Correct 100 ms 74488 KB Output is correct
80 Correct 119 ms 92920 KB Output is correct
81 Correct 81 ms 61560 KB Output is correct
82 Correct 113 ms 77688 KB Output is correct
83 Correct 77 ms 51960 KB Output is correct
84 Correct 85 ms 56312 KB Output is correct
85 Correct 78 ms 52728 KB Output is correct
86 Correct 127 ms 92664 KB Output is correct
87 Correct 72 ms 52856 KB Output is correct
88 Correct 138 ms 92792 KB Output is correct
89 Correct 100 ms 75128 KB Output is correct
90 Correct 87 ms 68088 KB Output is correct
91 Correct 221 ms 113248 KB Output is correct
92 Correct 136 ms 103280 KB Output is correct
93 Correct 189 ms 108264 KB Output is correct
94 Correct 188 ms 108264 KB Output is correct
95 Correct 138 ms 91384 KB Output is correct
96 Correct 108 ms 71976 KB Output is correct
97 Correct 155 ms 98036 KB Output is correct
98 Correct 109 ms 66028 KB Output is correct
99 Correct 150 ms 76256 KB Output is correct
100 Correct 168 ms 73824 KB Output is correct