oj.uz

Submission #50971

# Submission time Handle Problem Language Result Execution time Memory
50971 2018-06-15T10:18:21 Z model_code None (JOI16_ho_t2) C
100 / 100
 4 ms 1420 KB 
#include <stdio.h>

int n;
char S[100005];
int Jsum[100005],Isum[100005];

long long max(long long a,long long b){
  if(a>b) return a;
  return b;
}

int main(){
  int i;
  scanf("%d%s",&n,S);

  for(i=0;i<n;++i){
    Jsum[i+1]=Jsum[i]+(S[i]=='J'?1:0);
    Isum[i+1]=Isum[i]+(S[i]=='I'?1:0);
  }

  long long res_O=0;
  for(i=1;i<n;++i){
    if(res_O<Jsum[i]*(long long)(Isum[n]-Isum[i])){
      res_O=Jsum[i]*(long long)(Isum[n]-Isum[i]);
    }
  }
  long long res_J=0,res_I=0;
  long long ans=0;
  for(i=0;i<n;++i) if(S[i]=='O'){
    res_J+=Isum[n]-Isum[i+1];
    res_I+=Jsum[i];
    ans+=(Isum[n]-Isum[i+1])*(long long)Jsum[i];
  }

  ans+=max(max(res_O,res_J),res_I);

  printf("%lld\n",ans);
  return 0;
}

Compilation message

2016_ho_t2.c: In function 'main':
2016_ho_t2.c:14:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%s",&n,S);
   ^~~~~~~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 476 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 576 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 2 ms 576 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 2 ms 576 KB Output is correct
12 Correct 2 ms 576 KB Output is correct
13 Correct 2 ms 576 KB Output is correct
14 Correct 2 ms 576 KB Output is correct
15 Correct 2 ms 576 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 476 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 576 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 2 ms 576 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 2 ms 576 KB Output is correct
12 Correct 2 ms 576 KB Output is correct
13 Correct 2 ms 576 KB Output is correct
14 Correct 2 ms 576 KB Output is correct
15 Correct 2 ms 576 KB Output is correct
16 Correct 1 ms 576 KB Output is correct
17 Correct 2 ms 576 KB Output is correct
18 Correct 2 ms 576 KB Output is correct
19 Correct 2 ms 612 KB Output is correct
20 Correct 2 ms 612 KB Output is correct
21 Correct 2 ms 612 KB Output is correct
22 Correct 2 ms 612 KB Output is correct
23 Correct 2 ms 612 KB Output is correct
24 Correct 2 ms 732 KB Output is correct
25 Correct 2 ms 732 KB Output is correct
26 Correct 2 ms 732 KB Output is correct
27 Correct 2 ms 732 KB Output is correct
28 Correct 2 ms 732 KB Output is correct
29 Correct 2 ms 732 KB Output is correct
30 Correct 2 ms 732 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 476 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 576 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 2 ms 576 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 2 ms 576 KB Output is correct
12 Correct 2 ms 576 KB Output is correct
13 Correct 2 ms 576 KB Output is correct
14 Correct 2 ms 576 KB Output is correct
15 Correct 2 ms 576 KB Output is correct
16 Correct 1 ms 576 KB Output is correct
17 Correct 2 ms 576 KB Output is correct
18 Correct 2 ms 576 KB Output is correct
19 Correct 2 ms 612 KB Output is correct
20 Correct 2 ms 612 KB Output is correct
21 Correct 2 ms 612 KB Output is correct
22 Correct 2 ms 612 KB Output is correct
23 Correct 2 ms 612 KB Output is correct
24 Correct 2 ms 732 KB Output is correct
25 Correct 2 ms 732 KB Output is correct
26 Correct 2 ms 732 KB Output is correct
27 Correct 2 ms 732 KB Output is correct
28 Correct 2 ms 732 KB Output is correct
29 Correct 2 ms 732 KB Output is correct
30 Correct 2 ms 732 KB Output is correct
31 Correct 3 ms 1380 KB Output is correct
32 Correct 4 ms 1384 KB Output is correct
33 Correct 3 ms 1384 KB Output is correct
34 Correct 3 ms 1384 KB Output is correct
35 Correct 3 ms 1384 KB Output is correct
36 Correct 3 ms 1384 KB Output is correct
37 Correct 3 ms 1384 KB Output is correct
38 Correct 3 ms 1384 KB Output is correct
39 Correct 3 ms 1384 KB Output is correct
40 Correct 3 ms 1420 KB Output is correct
41 Correct 3 ms 1420 KB Output is correct
42 Correct 4 ms 1420 KB Output is correct
43 Correct 4 ms 1420 KB Output is correct
44 Correct 4 ms 1420 KB Output is correct
45 Correct 3 ms 1420 KB Output is correct