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Submission #830306

# Submission time Handle Problem Language Result Execution time Memory
830306 2023-08-19T03:00:30 Z exodus_ Lasers (NOI19_lasers) C++14
100 / 100
 256 ms 9984 KB 
#include<bits/stdc++.h>
#define se second
#define fi first
using namespace std;
const int nmax = 5*1e5+5;
int lenwall[nmax];
vector<pair<int,int>>blck;
int main() {
    int L,R,X;
    int maxlen = 0;
    cin >> L >> R;
    for(int i=1; i<=R; i++) {
        cin >> X;
        int le=0;
        int ri=L;
        for(int j=1; j<=X; j++) {
            cin >> lenwall[j];
            le+=lenwall[j];
        }
        le-=lenwall[X];
        for(int k=X; k>=1; k--) {
            int l=le;
            int r=le+lenwall[k];
            int lt=ri-lenwall[k];
            int rt=ri;
            if(max(l,lt) < min(r,rt)) blck.push_back({max(l,lt), min(r,rt)});
            if(k!=1) le-=lenwall[k-1];
            ri-=lenwall[k];
        }
    }
    sort(blck.begin(), blck.end());
    int ans=0;
    int right=0, left=0;
    for(int i=0; i<blck.size(); i++) {
        if(right<blck[i].fi) {
            ans+=(right-left);
            left = blck[i].fi;
            right = blck[i].fi;
        }
        right = max(right, blck[i].se);
    }
    ans+=(right-left);
    cout << ans << endl;
    return 0;
}

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:34:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for(int i=0; i<blck.size(); i++) {
      |                  ~^~~~~~~~~~~~
lasers.cpp:10:9: warning: unused variable 'maxlen' [-Wunused-variable]
   10 |     int maxlen = 0;
      |         ^~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 308 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 312 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 308 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 312 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 205 ms 9984 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 211 ms 7896 KB Output is correct
18 Correct 0 ms 312 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 3672 KB Output is correct
2 Correct 10 ms 1108 KB Output is correct
3 Correct 12 ms 916 KB Output is correct
4 Correct 43 ms 3724 KB Output is correct
5 Correct 31 ms 2244 KB Output is correct
6 Correct 45 ms 3080 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 64 ms 2792 KB Output is correct
9 Correct 27 ms 3192 KB Output is correct
10 Correct 50 ms 3888 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 224 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 3672 KB Output is correct
2 Correct 10 ms 1108 KB Output is correct
3 Correct 12 ms 916 KB Output is correct
4 Correct 43 ms 3724 KB Output is correct
5 Correct 31 ms 2244 KB Output is correct
6 Correct 45 ms 3080 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 64 ms 2792 KB Output is correct
9 Correct 27 ms 3192 KB Output is correct
10 Correct 50 ms 3888 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 224 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 194 ms 6672 KB Output is correct
22 Correct 34 ms 1504 KB Output is correct
23 Correct 16 ms 1232 KB Output is correct
24 Correct 68 ms 3788 KB Output is correct
25 Correct 201 ms 6564 KB Output is correct
26 Correct 55 ms 3680 KB Output is correct
27 Correct 25 ms 1416 KB Output is correct
28 Correct 188 ms 6584 KB Output is correct
29 Correct 189 ms 6600 KB Output is correct
30 Correct 51 ms 2552 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 308 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 312 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 205 ms 9984 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 211 ms 7896 KB Output is correct
18 Correct 0 ms 312 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 45 ms 3672 KB Output is correct
22 Correct 10 ms 1108 KB Output is correct
23 Correct 12 ms 916 KB Output is correct
24 Correct 43 ms 3724 KB Output is correct
25 Correct 31 ms 2244 KB Output is correct
26 Correct 45 ms 3080 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 64 ms 2792 KB Output is correct
29 Correct 27 ms 3192 KB Output is correct
30 Correct 50 ms 3888 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 224 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 308 KB Output is correct
38 Correct 1 ms 312 KB Output is correct
39 Correct 1 ms 308 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 194 ms 6672 KB Output is correct
42 Correct 34 ms 1504 KB Output is correct
43 Correct 16 ms 1232 KB Output is correct
44 Correct 68 ms 3788 KB Output is correct
45 Correct 201 ms 6564 KB Output is correct
46 Correct 55 ms 3680 KB Output is correct
47 Correct 25 ms 1416 KB Output is correct
48 Correct 188 ms 6584 KB Output is correct
49 Correct 189 ms 6600 KB Output is correct
50 Correct 51 ms 2552 KB Output is correct
51 Correct 26 ms 1632 KB Output is correct
52 Correct 210 ms 7920 KB Output is correct
53 Correct 256 ms 7832 KB Output is correct
54 Correct 49 ms 2820 KB Output is correct
55 Correct 111 ms 5196 KB Output is correct
56 Correct 63 ms 4108 KB Output is correct
57 Correct 74 ms 4452 KB Output is correct
58 Correct 216 ms 7920 KB Output is correct
59 Correct 66 ms 2600 KB Output is correct
60 Correct 87 ms 3584 KB Output is correct