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Submission #830308

# Submission time Handle Problem Language Result Execution time Memory
830308 2023-08-19T03:01:06 Z vjudge1 Lasers (NOI19_lasers) C++17
100 / 100
 213 ms 4436 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 197 ms 4436 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 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 213 ms 2480 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 3092 KB Output is correct
2 Correct 10 ms 912 KB Output is correct
3 Correct 12 ms 724 KB Output is correct
4 Correct 43 ms 3132 KB Output is correct
5 Correct 20 ms 1980 KB Output is correct
6 Correct 45 ms 2256 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 53 ms 1844 KB Output is correct
9 Correct 26 ms 2792 KB Output is correct
10 Correct 48 ms 3216 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 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 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 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 44 ms 3092 KB Output is correct
2 Correct 10 ms 912 KB Output is correct
3 Correct 12 ms 724 KB Output is correct
4 Correct 43 ms 3132 KB Output is correct
5 Correct 20 ms 1980 KB Output is correct
6 Correct 45 ms 2256 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 53 ms 1844 KB Output is correct
9 Correct 26 ms 2792 KB Output is correct
10 Correct 48 ms 3216 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 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 183 ms 2436 KB Output is correct
22 Correct 26 ms 848 KB Output is correct
23 Correct 15 ms 976 KB Output is correct
24 Correct 65 ms 2792 KB Output is correct
25 Correct 179 ms 2420 KB Output is correct
26 Correct 52 ms 2476 KB Output is correct
27 Correct 22 ms 848 KB Output is correct
28 Correct 181 ms 2404 KB Output is correct
29 Correct 195 ms 2516 KB Output is correct
30 Correct 47 ms 1612 KB Output is correct

Subtask #6
13.0 / 13.0

# 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 197 ms 4436 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 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 213 ms 2480 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 44 ms 3092 KB Output is correct
22 Correct 10 ms 912 KB Output is correct
23 Correct 12 ms 724 KB Output is correct
24 Correct 43 ms 3132 KB Output is correct
25 Correct 20 ms 1980 KB Output is correct
26 Correct 45 ms 2256 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 53 ms 1844 KB Output is correct
29 Correct 26 ms 2792 KB Output is correct
30 Correct 48 ms 3216 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 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 183 ms 2436 KB Output is correct
42 Correct 26 ms 848 KB Output is correct
43 Correct 15 ms 976 KB Output is correct
44 Correct 65 ms 2792 KB Output is correct
45 Correct 179 ms 2420 KB Output is correct
46 Correct 52 ms 2476 KB Output is correct
47 Correct 22 ms 848 KB Output is correct
48 Correct 181 ms 2404 KB Output is correct
49 Correct 195 ms 2516 KB Output is correct
50 Correct 47 ms 1612 KB Output is correct
51 Correct 25 ms 1032 KB Output is correct
52 Correct 210 ms 2384 KB Output is correct
53 Correct 201 ms 2380 KB Output is correct
54 Correct 47 ms 1348 KB Output is correct
55 Correct 113 ms 2428 KB Output is correct
56 Correct 62 ms 2780 KB Output is correct
57 Correct 72 ms 2416 KB Output is correct
58 Correct 206 ms 2356 KB Output is correct
59 Correct 52 ms 1440 KB Output is correct
60 Correct 84 ms 1592 KB Output is correct