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Submission #1007684

# Submission time Handle Problem Language Result Execution time Memory
1007684 2024-06-25T10:15:19 Z kebine Lasers (NOI19_lasers) C++17
100 / 100
 78 ms 11692 KB 
#include <bits/stdc++.h>
using namespace std;

# define int long long
# define fir first
# define sec second
# define pb push_back
# define endl "\n"

const int cnst = 2e5+5;
bool mutipletestcase = 0;
//bool debug = false;

bool sorting(pair<int, int> a, pair<int, int> b) {
    return a.sec > b.sec;
}

void solve() {
    int n, q; cin >> n >> q;

    int ans = 0;
    vector<pair<int, int>> range;

    while(q--) {
        // cerr << "IN" << endl;
        int x; cin >> x;
        int num[x+5];
        int pre[x+5]; pre[0] = 0;
        int suf[x+5]; suf[x+1] = n+1;
        for(int i = 1; i<=x; i++) {
            cin >> num[i];
            pre[i] = pre[i-1]+num[i]; 
        }

        int prev = 0;
        for(int i = x; i>=1; i--) suf[i] = suf[i+1]-num[i];

        for(int i = 1; i<=x; i++) {
            if(suf[i] <= pre[i]) range.pb({suf[i], pre[i]});
        }
    }

    sort(range.begin(), range.end(), sorting);

    int l = n+2; int r = n+1;
    for(auto v: range) {
        // cerr << v.fir << " " << v.sec << endl;
        if(v.sec < l) {
            ans += r-l+1;
            r = v.sec;
        }

        l = min(l, v.fir);
    }

    ans += r-l+1;

    cout << ans << endl;
}

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    int t = 1;
    if(mutipletestcase) cin >> t; 
    while(t--) solve();
}

Compilation message

lasers.cpp: In function 'void solve()':
lasers.cpp:35:13: warning: unused variable 'prev' [-Wunused-variable]
   35 |         int prev = 0;
      |             ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 428 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 428 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 74 ms 11692 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 77 ms 8340 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 10128 KB Output is correct
2 Correct 6 ms 2528 KB Output is correct
3 Correct 5 ms 2272 KB Output is correct
4 Correct 28 ms 9428 KB Output is correct
5 Correct 13 ms 5848 KB Output is correct
6 Correct 21 ms 10124 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 25 ms 8408 KB Output is correct
9 Correct 21 ms 9172 KB Output is correct
10 Correct 44 ms 10452 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 452 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 10128 KB Output is correct
2 Correct 6 ms 2528 KB Output is correct
3 Correct 5 ms 2272 KB Output is correct
4 Correct 28 ms 9428 KB Output is correct
5 Correct 13 ms 5848 KB Output is correct
6 Correct 21 ms 10124 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 25 ms 8408 KB Output is correct
9 Correct 21 ms 9172 KB Output is correct
10 Correct 44 ms 10452 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 452 KB Output is correct
21 Correct 73 ms 7240 KB Output is correct
22 Correct 13 ms 2012 KB Output is correct
23 Correct 8 ms 2456 KB Output is correct
24 Correct 34 ms 9172 KB Output is correct
25 Correct 76 ms 7452 KB Output is correct
26 Correct 26 ms 5588 KB Output is correct
27 Correct 10 ms 2012 KB Output is correct
28 Correct 78 ms 6796 KB Output is correct
29 Correct 74 ms 7620 KB Output is correct
30 Correct 24 ms 4816 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 428 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 74 ms 11692 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 77 ms 8340 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 32 ms 10128 KB Output is correct
22 Correct 6 ms 2528 KB Output is correct
23 Correct 5 ms 2272 KB Output is correct
24 Correct 28 ms 9428 KB Output is correct
25 Correct 13 ms 5848 KB Output is correct
26 Correct 21 ms 10124 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 25 ms 8408 KB Output is correct
29 Correct 21 ms 9172 KB Output is correct
30 Correct 44 ms 10452 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 604 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 452 KB Output is correct
41 Correct 73 ms 7240 KB Output is correct
42 Correct 13 ms 2012 KB Output is correct
43 Correct 8 ms 2456 KB Output is correct
44 Correct 34 ms 9172 KB Output is correct
45 Correct 76 ms 7452 KB Output is correct
46 Correct 26 ms 5588 KB Output is correct
47 Correct 10 ms 2012 KB Output is correct
48 Correct 78 ms 6796 KB Output is correct
49 Correct 74 ms 7620 KB Output is correct
50 Correct 24 ms 4816 KB Output is correct
51 Correct 12 ms 2524 KB Output is correct
52 Correct 76 ms 7924 KB Output is correct
53 Correct 78 ms 8432 KB Output is correct
54 Correct 19 ms 3544 KB Output is correct
55 Correct 50 ms 7912 KB Output is correct
56 Correct 30 ms 9172 KB Output is correct
57 Correct 33 ms 7696 KB Output is correct
58 Correct 73 ms 7364 KB Output is correct
59 Correct 23 ms 3288 KB Output is correct
60 Correct 31 ms 3788 KB Output is correct