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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#737645#9536. Athlete Welcome Ceremonyucup-team1412WA 60ms343912kbC++143.1kb2024-11-12 16:30:062024-11-12 16:30:08

Judging History

This is the latest submission verdict.

  • [2024-11-12 16:30:08]
  • Judged
  • Verdict: WA
  • Time: 60ms
  • Memory: 343912kb
Show
  • [2024-11-12 16:30:06]
  • Submitted

answer

//https://contest.ucup.ac/contest/1821/problem/9536?v=1
//f[i][x][y][p] : 考虑前i个字符，使用j个a，k个b，并且最后一个字符是p
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll maxn = 305;
ll n , q;
string c, s;
ll f[maxn][maxn][maxn][3];
ll g[maxn][maxn][maxn];
ll cnt[3];
const ll mod = 1e9 + 7;
signed main(){
    cin >> n >> q;
    cin >> c;
    s = "0";
    s += c;

    for(ll i = 1 ; i <= n;i++){
        if(s[i]!='?')cnt[ (ll)(s[i] - 'a') ]++; 
    }


    if(s[1] == '?'){
        f[1][2][1][0] = 1;
        f[1][1][2][1] = 1;
        f[1][1][1][2] = 1;

    }
    else{
        if(s[1] == 'a')f[1][2][1][0] = 1;
        if(s[1] == 'b')f[1][1][2][1] = 1;
        if(s[1] == 'c')f[1][1][1][2] = 1;
    }

    for(ll i = 2; i <= n ;i ++){
        for(ll x = 1 ; x <= i + 1 ; x++){
            for(ll y = 1 ; x + y <= i + 2; y++ ){
                // cout <<  "fdassdas" << endl;
                ll z = i + 3 - x - y;

                if(s[i] != '?'){
                    if(s[i] == 'a' && x >= 1){
                        //f[1][2][1][0]
                        f[i][x][y][0] = ( f[i - 1][x - 1][y][1] + f[i - 1][x - 1][y][2]+ mod) % mod ;
                    }
                    else if ( s[i] == 'b' && y >= 1 ){
                        f[i][x][y][1] = (f[i - 1][x][y - 1][0] + f[i - 1][x][y - 1][2]+ mod)% mod ;
                    }
                    else if ( s[i] == 'c' && z >= 1 ){
                        f[i][x][y][2] = (f[i - 1][x][y][0] + f[i - 1][x][y][1] + mod) % mod;
                    }
                }
                else{
                    if(s[i - 1] != 'a' && x >= 1  ){//can select a
                        f[i][x][y][0] = (  f[i - 1][x - 1][y][1] + f[i - 1][x - 1][y][2]+ mod) % mod;
                    }
                    if(s[i - 1] != 'b' && y >= 1){//can select b
                        f[i][x][y][1] = (f[i - 1][x][y - 1][0]  + f[i - 1][x][y - 1][2]+ mod) % mod;
                    }
                    if(s[i - 1] != 'c' && z >= 1){//can select c
                        f[i][x][y][2] = (f[i - 1][x][y][0] + f[i - 1][x][y][1] + mod) % mod;
                    }
                }


            }
        }
    }


    // cout << f[6][3][3][2] << endl;
    for(ll x = 1 ; x <= 2 * n + 1; x++){
        for(ll y = 1 ;y <= 2 * n + 1; y++){
            for(ll z = 1 ; z <= 2 * n + 1 ; z++){

                ll res = 0;
                for(ll  i = 0 ; i <= 2 ; i++){
                    res = ( res + f[n][x][y][i] + mod)% mod;
                }
                // cout << res << endl;

                g[x][y][z] = (g[x-1][y][z] + g[x][y-1][z] + g[x][y][z-1] - g[x-1][y-1][z]-g[x-1][y][z-1]-g[x][y-1][z-1] + g[x-1][y-1][z-1] + mod)%mod;
                if(x + y + z == n + 3){
                    g[x][y][z] = (g[x][y][z] + res) % mod;
                }
                // cout << g[x][y][z] << endl;
            }



        }
    }

    while(q--){
        ll x,y,z;
        cin >> x >> y >> z;
        cout << g[x + 1 + cnt[0] ][y + 1 + cnt[1] ][z + 1 + cnt[2] ] % mod<< endl;
    }

    return 0;
}
Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 16368kb

input:

6 3
a?b??c
2 2 2
1 1 1
1 0 2

output:

3
1
1

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 0ms
memory: 16296kb

input:

6 3
??????
2 2 2
2 3 3
3 3 3

output:

30
72
96

result:

ok 3 lines

Test #3:

score: 0
Accepted
time: 1ms
memory: 5796kb

input:

1 1
?
0 1 1

output:

2

result:

ok single line: '2'

Test #4:

score: 0
Accepted
time: 0ms
memory: 25204kb

input:

10 10
acab?cbaca
0 2 0
1 1 2
4 2 3
1 1 1
3 5 1
0 5 2
2 2 0
1 2 5
4 3 0
1 1 3

output:

0
1
1
1
1
0
1
1
1
1

result:

ok 10 lines

Test #5:

score: 0
Accepted
time: 0ms
memory: 25144kb

input:

10 10
?c?c?cbac?
10 5 1
5 8 7
9 2 6
5 7 1
5 2 6
5 6 5
5 10 3
9 1 10
2 5 9
1 2 9

output:

16
16
11
16
11
16
16
5
11
0

result:

ok 10 lines

Test #6:

score: 0
Accepted
time: 0ms
memory: 141244kb

input:

50 100
?abacbacab?cbcbcb?acabcbabcbcacbababc?caba?acacbca
8 3 8
2 4 8
8 7 3
0 9 2
10 8 7
7 6 5
4 10 2
6 9 3
3 6 6
9 10 8
2 5 8
8 1 0
3 5 0
1 0 6
5 0 8
6 5 5
1 7 9
7 7 10
4 7 5
6 6 4
10 1 2
4 1 7
10 0 8
7 6 3
1 9 1
4 7 2
8 4 0
8 6 1
5 10 4
5 8 2
5 8 4
4 5 9
5 2 1
1 10 9
4 10 1
8 4 3
8 9 9
8 0 1
0 8 0...

output:

8
8
8
0
8
8
6
8
8
8
8
0
0
0
1
8
4
8
8
8
2
4
1
8
1
6
0
2
8
6
8
8
1
4
2
8
8
0
0
8
2
0
8
8
8
4
8
8
8
8
2
0
0
4
8
8
1
8
7
6
7
0
8
8
8
0
4
7
8
4
0
8
0
4
8
8
8
7
8
4
7
2
8
8
8
0
2
2
8
8
8
4
4
0
8
0
8
8
1
1

result:

ok 100 lines

Test #7:

score: 0
Accepted
time: 8ms
memory: 140896kb

input:

50 100
b????????bca?????c?b??ca?acac?b?b???ca?ab???a?a???
35 43 36
12 49 47
7 11 34
38 44 22
42 17 10
49 8 38
18 26 44
6 18 14
28 29 6
48 32 47
29 15 48
1 5 33
24 17 18
10 27 32
19 10 34
2 23 9
14 24 39
46 12 34
9 49 26
21 8 46
43 43 3
31 16 2
8 27 7
24 41 35
17 25 31
0 13 47
24 31 23
33 40 30
36 39...

output:

34272000
31599360
497244
34272000
17637520
12290752
34272000
93044
415832
34272000
34272000
0
34272000
16360704
27933952
0
34272000
33886976
7896832
12290752
718
24
0
34272000
34272000
0
34272000
34272000
34272000
32254720
0
5666944
34256640
34272000
34272000
12290752
30493248
34256640
20630016
0
10...

result:

ok 100 lines

Test #8:

score: 0
Accepted
time: 60ms
memory: 343912kb

input:

100 1000
c?cbababcabacbacbacacbacabcbabababacababcbcab?cbabacbacbcbcacbab?bcabcbcababcacbabacbcb?babcbab?baca
13 11 4
4 17 20
14 5 2
16 14 15
8 12 17
19 5 11
5 17 12
20 7 6
19 10 1
6 5 0
13 1 9
7 17 1
20 4 16
11 12 18
19 2 16
18 1 11
19 16 3
7 1 0
6 9 16
6 9 16
6 20 7
0 16 20
1 2 8
16 5 20
18 14 18
...

output:

16
15
14
16
16
16
16
16
8
2
16
8
16
16
16
16
16
2
16
16
16
0
1
16
16
5
1
5
16
16
16
16
16
15
16
13
16
15
2
16
16
1
8
16
16
16
15
0
16
15
16
16
16
16
8
8
16
16
16
16
16
16
8
16
16
1
8
8
16
16
1
16
1
0
16
2
2
16
7
16
16
8
16
16
16
16
1
16
14
16
16
16
16
5
16
16
14
16
11
16
15
11
2
1
8
16
16
7
16
5
16
...

result:

ok 1000 lines

Test #9:

score: -100
Wrong Answer
time: 56ms
memory: 343900kb

input:

100 1000
?????c??????????????????????????b???a????a?????????????????????????c????????????????????????????????
43 38 20
27 40 32
39 27 33
28 50 43
50 3 46
38 46 14
42 48 10
45 25 28
49 10 49
38 17 42
41 49 22
41 18 44
46 47 25
17 44 35
34 43 22
47 42 32
32 44 40
36 41 24
45 38 45
49 44 18
42 34 32
43...

output:

490475656
143989836
119661929
707864467
10104
219100551
479284703
764218529
903846231
659694548
204287063
105920502
191779504
182802705
215438611
938692318
797581204
903917420
893995828
287222624
578695829
95654849
457810426
709349795
85961844
923330494
783007506
111119718
295402274
241594071
551680...

result:

wrong answer 170th lines differ - expected: '931481592', found: '-68518415'
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