oj.uz

Submission #901667

# Submission time Handle Problem Language Result Execution time Memory
901667 2024-01-09T22:01:09 Z alexander707070 Misspelling (JOI22_misspelling) C++14
28 / 100
 62 ms 11112 KB 
#include<bits/stdc++.h>
#define MAXN 2007
using namespace std;
 
const int mod=1e9+7;
 
int n,m,a,b,ans;
 
int dp[MAXN][30];
int maxs[MAXN][MAXN],maxs2[MAXN][MAXN],es[MAXN],es2[MAXN];
bool bad[MAXN],bad2[MAXN];
 
void calc_dp(){

    for(int pos=n;pos>=1;pos--){

        for(int f=pos+1;f<=es[pos];f++)bad[f]=true;
        for(int f=pos+1;f<=es2[pos];f++)bad2[f]=true;

        for(int letter=0;letter<26;letter++){

            dp[pos][letter]=1;
            
            for(int nxtletter=0;nxtletter<26;nxtletter++){
                if(nxtletter==letter)continue;

                for(int f=pos+1;f<=n;f++){
                    if(nxtletter<letter and !bad[f]){
                        dp[pos][letter]+=dp[f][nxtletter];
                        dp[pos][letter]%=mod;
                    }

                    if(nxtletter>letter and !bad2[f]){
                        dp[pos][letter]+=dp[f][nxtletter];
                        dp[pos][letter]%=mod;
                    }
                }
            }
        }
    }
}
 
 
int main(){
 
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
 
    cin>>n>>m;
    for(int i=1;i<=m;i++){
        cin>>a>>b;
 
        if(a<b){
            es[a]=max(es[a],b);
        }else{
            es2[b]=max(es2[b],a);
        }
    }

    calc_dp();
    for(int i=0;i<26;i++){
        ans+=dp[1][i];
        ans%=mod;
    }
 
    cout<<ans<<"\n";
 
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 516 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 516 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 33 ms 348 KB Output is correct
16 Correct 24 ms 488 KB Output is correct
17 Correct 22 ms 348 KB Output is correct
18 Correct 30 ms 348 KB Output is correct
19 Correct 20 ms 344 KB Output is correct
20 Correct 21 ms 344 KB Output is correct
21 Correct 22 ms 348 KB Output is correct
22 Correct 20 ms 344 KB Output is correct
23 Correct 44 ms 604 KB Output is correct
24 Correct 21 ms 348 KB Output is correct
25 Correct 20 ms 344 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Runtime error 62 ms 11112 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 516 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 33 ms 348 KB Output is correct
16 Correct 24 ms 488 KB Output is correct
17 Correct 22 ms 348 KB Output is correct
18 Correct 30 ms 348 KB Output is correct
19 Correct 20 ms 344 KB Output is correct
20 Correct 21 ms 344 KB Output is correct
21 Correct 22 ms 348 KB Output is correct
22 Correct 20 ms 344 KB Output is correct
23 Correct 44 ms 604 KB Output is correct
24 Correct 21 ms 348 KB Output is correct
25 Correct 20 ms 344 KB Output is correct
26 Runtime error 4 ms 856 KB Execution killed with signal 11
27 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 516 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 33 ms 348 KB Output is correct
16 Correct 24 ms 488 KB Output is correct
17 Correct 22 ms 348 KB Output is correct
18 Correct 30 ms 348 KB Output is correct
19 Correct 20 ms 344 KB Output is correct
20 Correct 21 ms 344 KB Output is correct
21 Correct 22 ms 348 KB Output is correct
22 Correct 20 ms 344 KB Output is correct
23 Correct 44 ms 604 KB Output is correct
24 Correct 21 ms 348 KB Output is correct
25 Correct 20 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Runtime error 62 ms 11112 KB Execution killed with signal 11
31 Halted 0 ms 0 KB -