oj.uz

Submission #438876

# Submission time Handle Problem Language Result Execution time Memory
438876 2021-06-28T21:23:05 Z Snowfall JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 35 ms 3040 KB 
#include<bits/stdc++.h>
using namespace std;
char arr[200005];
int a[1000];
int qs[3][200005];
main()
{
	int t,p;
    a['O']=1;
    a['I']=2;
    scanf("%d%d",&t,&p);
    scanf("%s",&arr[1]);
    for(int i = 1;i <= t;i++)
    {
        qs[a[arr[i]]][i]++;
        // printf("%d\n",arr[i]);
        for(int j = 0;j < 3;j++)
        qs[j][i]+=qs[j][i-1];
    }
    int mn=1e9;
    for(int i = 1;i <= t;i++)
    {
        int ck=0;
        int pv=i;
        int sm=0;
        for(int j = 0;j < 3 && ck==j;j++)
        {
            int st=pv,ed=t;
            int tmn=1e9;
            while(st<=ed)
            {
                int md=(st+ed)/2;
                // printf("%d %d<--\n",qs[j][md],qs[j][pv-1]);
                if(qs[j][md]-qs[j][pv-1]>=p)
                {
                    ed=md-1;
                    tmn=min(tmn,md);
                }
                else
                {
                    st=md+1;
                }
            }
            // printf("d %d %d %d\n",j,tmn,pv-1);
            if(tmn==1e9)
            break;
            if(qs[j][tmn]-qs[j][pv-1]==p)
            {
                sm+=tmn-pv+1-p;
                ck++;
                pv=tmn+1;
            }
            // printf("%d %d\n",pv,sm);
        }
        if(ck==3)
        mn=min(mn,sm);
    }
    if(mn!=1e9)
    printf("%d",mn);
    else
    printf("-1");
}

Compilation message

ho_t2.cpp:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main()
      | ^~~~
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:15:19: warning: array subscript has type 'char' [-Wchar-subscripts]
   15 |         qs[a[arr[i]]][i]++;
      |              ~~~~~^
ho_t2.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     scanf("%d%d",&t,&p);
      |     ~~~~~^~~~~~~~~~~~~~
ho_t2.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%s",&arr[1]);
      |     ~~~~~^~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 356 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 304 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 280 KB Output is correct
35 Correct 1 ms 332 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 356 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 304 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 280 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 29 ms 2764 KB Output is correct
37 Correct 31 ms 3020 KB Output is correct
38 Correct 31 ms 3028 KB Output is correct
39 Correct 31 ms 3020 KB Output is correct
40 Correct 24 ms 3020 KB Output is correct
41 Correct 30 ms 3032 KB Output is correct
42 Correct 35 ms 3020 KB Output is correct
43 Correct 12 ms 2020 KB Output is correct
44 Correct 17 ms 2364 KB Output is correct
45 Correct 20 ms 2996 KB Output is correct
46 Correct 20 ms 3020 KB Output is correct
47 Correct 20 ms 3032 KB Output is correct
48 Correct 19 ms 3020 KB Output is correct
49 Correct 13 ms 2124 KB Output is correct
50 Correct 20 ms 3020 KB Output is correct
51 Correct 20 ms 3020 KB Output is correct
52 Correct 10 ms 2892 KB Output is correct
53 Correct 11 ms 3020 KB Output is correct
54 Correct 16 ms 3040 KB Output is correct
55 Correct 13 ms 3020 KB Output is correct
56 Correct 9 ms 3036 KB Output is correct