QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#772798 | #9536. Athlete Welcome Ceremony | luishgh | WA | 91ms | 934824kb | C++20 | 3.2kb | 2024-11-22 21:53:14 | 2024-11-22 21:53:15 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define _ ios_base::sync_with_stdio(0);cin.tie(0);
#define endl '\n'
typedef long long ll;
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3fll;
#define int ll
const int MOD = 1e9 + 7;
ll add(ll a, ll b) {
ll r = a + b;
//if (r >= MOD) r -= MOD;
return r % MOD;
}
const int MAX = 300 + 10;
//const int MAX = 10;
ll dp[MAX][MAX][MAX][3];
signed main() {_
//cout << "entrou" << endl;
int n, q; cin >> n >> q;
string s; cin >> s;
int tot = n;
for (auto c : s) if (c != '?') tot--;
// dp[i][b][c][last] = dp[i+1][b-1][c][b] + dp[i+1][b][c-1][last]
memset(dp, 0, sizeof dp);
//cout << "memsetou" << endl;
dp[n][0][0][0] = 1;
dp[n][0][0][1] = 1;
dp[n][0][0][2] = 1;
int cnt = 0;
for (int i = n - 1; i >= 0; i--) {
if (s[i] == '?') cnt++;
for (int b = 0; b <= n; b++) {
for (int c = 0; c <= n; c++) {
if (b + c > cnt) continue;
int a = cnt - b - c;
if (s[i] == 'a') {
dp[i][b][c][0] = 0;
dp[i][b][c][1] = dp[i+1][b][c][0];
dp[i][b][c][2] = dp[i+1][b][c][0];
} else if (s[i] == 'b') {
dp[i][b][c][0] = dp[i+1][b][c][1];
dp[i][b][c][1] = 0;
dp[i][b][c][2] = dp[i+1][b][c][1];
} else if (s[i] == 'c') {
dp[i][b][c][0] = dp[i+1][b][c][2];
dp[i][b][c][1] = dp[i+1][b][c][2];
dp[i][b][c][2] = 0;
} else {
for (int last = 0; last < 3; last++) {
auto & pdm = dp[i][b][c][last];
if (a > 0 and last != 0) pdm = add(pdm, dp[i+1][b][c][0]);
if (b > 0 and last != 1) pdm = add(pdm, dp[i+1][b-1][c][1]);
if (c > 0 and last != 2) pdm = add(pdm, dp[i+1][b][c-1][2]);
//cerr << b << ' ' << c << ' ' << last << ' ' << pdm << endl;
}
}
}
}
}
ll ans[MAX][MAX][MAX];
auto query = [&] (int a, int b, int c) -> ll {
ll ret = 0;
if (a + b + c != tot) return 0;
if (s[0] == '?') {
ret = add(ret, dp[1][b][c][0]);
if (b > 0) ret = add(ret, dp[1][b-1][c][1]);
if (c > 0) ret = add(ret, dp[1][b][c-1][2]);
} else {
if (s[0] == 'a') ret = add(ret, dp[1][b][c][0]);
if (s[0] == 'b') ret = add(ret, dp[1][b][c][1]);
if (s[0] == 'c') ret = add(ret, dp[1][b][c][2]);
}
return ret;
};
ans[1][0][0] = query(1, 0, 0);
ans[0][1][0] = query(0, 1, 0);
ans[0][0][1] = query(0, 0, 1);
for (int a = 0; a <= n; a++) {
for (int b = 0; b <= n; b++) {
for (int c = 0; c <= n; c++) {
auto & pdm = ans[a][b][c];
pdm = query(a, b, c);
if (a > 0) pdm = add(pdm, ans[a-1][b][c]);
if (b > 0) pdm = add(pdm, ans[a][b-1][c]);
if (c > 0) pdm = add(pdm, ans[a][b][c-1]);
if (a > 0 and b > 0 and c > 0) pdm = add(pdm, ans[a-1][b-1][c-1]);
if (a > 0 and b > 0) pdm -= ans[a-1][b-1][c];
if (a > 0 and c > 0) pdm -= ans[a-1][b][c-1];
if (b > 0 and c > 0) pdm -= ans[a][b-1][c-1];
}
}
}
while(q--) {
int x, y, z; cin >> x >> y >> z;
cout << ans[x][y][z] << endl;
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 20ms
memory: 934824kb
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: 91ms
memory: 934824kb
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: 52ms
memory: 934532kb
input:
1 1 ? 0 1 1
output:
2
result:
ok single line: '2'
Test #4:
score: 0
Accepted
time: 35ms
memory: 934476kb
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: 43ms
memory: 934584kb
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: 43ms
memory: 934584kb
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: 47ms
memory: 934624kb
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: 31ms
memory: 934628kb
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: 60ms
memory: 934592kb
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:
-15509524456 3143989857 3119661950 -547348295966976 10104 -780899456 5479284738 -2235781492 238903847897 -2340305473 2738204306229 42105920796 -91616808861815 182802705 4215438639 -605042065542983 19600797718404 -9096082650 18129731020903938 1592287233768 328578698125 16865523213713510 -662542194215...
result:
wrong answer 1st lines differ - expected: '490475656', found: '-15509524456'