oj.uz

Submission #211780

# Submission time Handle Problem Language Result Execution time Memory
211780 2020-03-21T08:54:22 Z jzh JOIOJI (JOI14_joioji) C++14
100 / 100
 75 ms 11752 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n,i,x,y,a=0,b=0,ans=0;
    string s;
    cin>>n>>s;
    map<pair<ll,ll>,ll>mini,maxi;
    s='.'+s;
    mini[{0,0}]=0;
    maxi[{0,0}]=0;
    for (i=1;i<=n;i++){
        if (s[i]=='J')a++;
        else if (s[i]=='O')a--;
        if (s[i]=='O')b++;
        else if (s[i]=='I')b--;
        if (mini.find({a,b})==mini.end())mini[{a,b}]=i;
        maxi[{a,b}]=i;
    }
    for (auto it:mini){
        if (it.second!=maxi[it.first]){
            ans=max(ans,maxi[it.first]-it.second);
        }
    }

    cout<<ans<<'\n';
}

Compilation message

joioji.cpp: In function 'int main()':
joioji.cpp:7:12: warning: unused variable 'x' [-Wunused-variable]
     ll n,i,x,y,a=0,b=0,ans=0;
            ^
joioji.cpp:7:14: warning: unused variable 'y' [-Wunused-variable]
     ll n,i,x,y,a=0,b=0,ans=0;
              ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 416 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 6 ms 512 KB Output is correct
9 Correct 6 ms 640 KB Output is correct
10 Correct 6 ms 640 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 768 KB Output is correct
2 Correct 14 ms 1536 KB Output is correct
3 Correct 21 ms 2432 KB Output is correct
4 Correct 37 ms 3956 KB Output is correct
5 Correct 75 ms 6288 KB Output is correct
6 Correct 67 ms 6464 KB Output is correct
7 Correct 70 ms 7360 KB Output is correct
8 Correct 62 ms 6160 KB Output is correct
9 Correct 65 ms 6720 KB Output is correct
10 Correct 61 ms 6208 KB Output is correct
11 Correct 63 ms 9688 KB Output is correct
12 Correct 46 ms 3784 KB Output is correct
13 Correct 35 ms 2384 KB Output is correct
14 Correct 68 ms 11752 KB Output is correct
15 Correct 25 ms 1864 KB Output is correct