oj.uz

Submission #571893

# Submission time Handle Problem Language Result Execution time Memory
571893 2022-06-03T05:53:06 Z dantoh000 JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 11 ms 3364 KB 
#include <bits/stdc++.h>
using namespace std;
int n,k;
string s;
int nx[200005];
int jmp[200005];
vector<int> J, O, I;
int main(){
    scanf("%d%d",&n,&k);
    cin >> s;
    for (int i = 0; i < n; i++){
        if (s[i] == 'J') J.push_back(i);
        if (s[i] == 'O') O.push_back(i);
        if (s[i] == 'I') I.push_back(i);
    }
    int lastI = -1, lastO = -1;
    memset(nx,-1,sizeof(nx));
    for (int i = n-1; i >= 0; i--){
        if (s[i] == 'I') lastI = i;
        if (s[i] == 'O') {
            nx[i] = lastI;
            lastO = i;
        }
        if (s[i] == 'J'){
            nx[i] = lastO;
        }
    }
    memset(jmp,-1,sizeof(jmp));
    for (int i = 0; i < J.size()-k+1; i++){
        jmp[J[i]] = J[i+k-1];
    }
    for (int i = 0; i < O.size()-k+1; i++){
        jmp[O[i]] = O[i+k-1];
    }
    for (int i = 0; i < I.size()-k+1; i++){
        jmp[I[i]] = I[i+k-1];
    }
    int ans = -1;
    for (int i = 0; i < J.size()-k+1; i++){
        int lastJ = jmp[J[i]];
        int firstO = nx[lastJ]; if (firstO == -1) continue;
        int lastO = jmp[firstO]; if (lastO == -1) continue;
        int firstI = nx[lastO]; if (firstI == -1) continue;
        int lastI = jmp[firstI]; if (lastI == -1) continue;
        int cost = lastI - J[i] + 1 - 3*k;
        if (ans == -1 || ans > cost) ans = cost;
    }
    printf("%d\n",ans);

}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i = 0; i < J.size()-k+1; i++){
      |                     ~~^~~~~~~~~~~~~~
ho_t2.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (int i = 0; i < O.size()-k+1; i++){
      |                     ~~^~~~~~~~~~~~~~
ho_t2.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for (int i = 0; i < I.size()-k+1; i++){
      |                     ~~^~~~~~~~~~~~~~
ho_t2.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for (int i = 0; i < J.size()-k+1; i++){
      |                     ~~^~~~~~~~~~~~~~
ho_t2.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Correct 1 ms 1748 KB Output is correct
3 Correct 1 ms 1748 KB Output is correct
4 Correct 1 ms 1748 KB Output is correct
5 Correct 1 ms 1748 KB Output is correct
6 Correct 1 ms 1844 KB Output is correct
7 Correct 1 ms 1748 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1748 KB Output is correct
10 Correct 1 ms 1748 KB Output is correct
11 Correct 1 ms 1876 KB Output is correct
12 Correct 1 ms 1748 KB Output is correct
13 Correct 1 ms 1748 KB Output is correct
14 Correct 2 ms 1848 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Correct 1 ms 1748 KB Output is correct
3 Correct 1 ms 1748 KB Output is correct
4 Correct 1 ms 1748 KB Output is correct
5 Correct 1 ms 1748 KB Output is correct
6 Correct 1 ms 1844 KB Output is correct
7 Correct 1 ms 1748 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1748 KB Output is correct
10 Correct 1 ms 1748 KB Output is correct
11 Correct 1 ms 1876 KB Output is correct
12 Correct 1 ms 1748 KB Output is correct
13 Correct 1 ms 1748 KB Output is correct
14 Correct 2 ms 1848 KB Output is correct
15 Correct 1 ms 1876 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 1 ms 1876 KB Output is correct
19 Correct 1 ms 1876 KB Output is correct
20 Correct 1 ms 1876 KB Output is correct
21 Correct 2 ms 1876 KB Output is correct
22 Correct 1 ms 1876 KB Output is correct
23 Correct 1 ms 1876 KB Output is correct
24 Correct 1 ms 1876 KB Output is correct
25 Correct 1 ms 1876 KB Output is correct
26 Correct 1 ms 1876 KB Output is correct
27 Correct 1 ms 1876 KB Output is correct
28 Correct 1 ms 1876 KB Output is correct
29 Correct 1 ms 1876 KB Output is correct
30 Correct 1 ms 1840 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 2 ms 1876 KB Output is correct
33 Correct 1 ms 1792 KB Output is correct
34 Correct 1 ms 1876 KB Output is correct
35 Correct 1 ms 1876 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Correct 1 ms 1748 KB Output is correct
3 Correct 1 ms 1748 KB Output is correct
4 Correct 1 ms 1748 KB Output is correct
5 Correct 1 ms 1748 KB Output is correct
6 Correct 1 ms 1844 KB Output is correct
7 Correct 1 ms 1748 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1748 KB Output is correct
10 Correct 1 ms 1748 KB Output is correct
11 Correct 1 ms 1876 KB Output is correct
12 Correct 1 ms 1748 KB Output is correct
13 Correct 1 ms 1748 KB Output is correct
14 Correct 2 ms 1848 KB Output is correct
15 Correct 1 ms 1876 KB Output is correct
16 Correct 1 ms 1876 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 1 ms 1876 KB Output is correct
19 Correct 1 ms 1876 KB Output is correct
20 Correct 1 ms 1876 KB Output is correct
21 Correct 2 ms 1876 KB Output is correct
22 Correct 1 ms 1876 KB Output is correct
23 Correct 1 ms 1876 KB Output is correct
24 Correct 1 ms 1876 KB Output is correct
25 Correct 1 ms 1876 KB Output is correct
26 Correct 1 ms 1876 KB Output is correct
27 Correct 1 ms 1876 KB Output is correct
28 Correct 1 ms 1876 KB Output is correct
29 Correct 1 ms 1876 KB Output is correct
30 Correct 1 ms 1840 KB Output is correct
31 Correct 1 ms 1876 KB Output is correct
32 Correct 2 ms 1876 KB Output is correct
33 Correct 1 ms 1792 KB Output is correct
34 Correct 1 ms 1876 KB Output is correct
35 Correct 1 ms 1876 KB Output is correct
36 Correct 9 ms 3012 KB Output is correct
37 Correct 10 ms 3196 KB Output is correct
38 Correct 10 ms 3232 KB Output is correct
39 Correct 11 ms 3240 KB Output is correct
40 Correct 11 ms 3284 KB Output is correct
41 Correct 10 ms 3196 KB Output is correct
42 Correct 10 ms 3364 KB Output is correct
43 Correct 6 ms 2776 KB Output is correct
44 Correct 8 ms 3036 KB Output is correct
45 Correct 9 ms 3260 KB Output is correct
46 Correct 11 ms 3236 KB Output is correct
47 Correct 10 ms 3252 KB Output is correct
48 Correct 9 ms 3320 KB Output is correct
49 Correct 7 ms 2872 KB Output is correct
50 Correct 10 ms 3136 KB Output is correct
51 Correct 10 ms 3260 KB Output is correct
52 Correct 9 ms 3136 KB Output is correct
53 Correct 9 ms 3268 KB Output is correct
54 Correct 7 ms 3172 KB Output is correct
55 Correct 7 ms 3172 KB Output is correct
56 Correct 7 ms 3172 KB Output is correct