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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 |
---|---|---|---|---|---|---|---|---|---|
#725693 | #9536. Athlete Welcome Ceremony | wuyunzhishi | WA | 31ms | 4872kb | C++20 | 3.4kb | 2024-11-08 19:26:12 | 2024-11-08 19:26:12 |
Judging History
answer
#include <bits/stdc++.h>
using ll = long long;
#define A 0
#define B 1
#define C 2
const ll mod = 1e9 + 7;
// dp[i][j][k] 表示?中有i个a,j个b,结尾为k的方案数
void solve() {
int n, q; std::cin >> n >> q;
std::string s; std::cin >> s;
std::vector dp(n + 1, std::vector(n + 1, std::vector<ll>(3, 0)));
if(s[0] == 'a') dp[0][0][A] = 1;
else if(s[0] == 'b') dp[0][0][B] = 1;
else if(s[0] == 'c') dp[0][0][C] = 1;
else {
dp[1][0][A] = 1;
dp[0][1][B] = 1;
dp[0][0][C] = 1;;
}
for(int i = 1; i < n; i++) {
std::vector<std::vector<std::vector<ll>>> t = dp;
if(s[i] == '?') {
for(int x = 0; x <= n; x++) {
for(int y = 0; y <= n; y++) {
if(x - 1 >= 0) dp[x][y][A] =( t[x - 1][y][B] + t[x - 1][y][C]) % mod;
else dp[x][y][A] = 0;
if(y - 1 >= 0) dp[x][y][B] = (t[x][y - 1][A] + t[x][y - 1][C]) % mod;
else dp[x][y][B] = 0;
dp[x][y][C] = (t[x][y][A] + t[x][y][B]) % mod;
}
}
}
else if(s[i] == 'a') {
for(int x = 0; x <= n; x++) {
for(int y = 0; y <= n; y++) {
dp[x][y][A] = (t[x][y][B] + t[x][y][C]) % mod;
dp[x][y][B] = 0;
dp[x][y][C] = 0;
}
}
}
else if(s[i] == 'b') {
for(int x = 0; x <= n; x++) {
for(int y = 0; y <= n; y++) {
dp[x][y][B] = (t[x][y][A] + t[x][y][C]) % mod;
dp[x][y][A] = 0;
dp[x][y][C] = 0;
}
}
}
else if(s[i] == 'c') {
for(int x = 0; x <= n; x++) {
for(int y = 0; y <= n; y++) {
dp[x][y][C] = (t[x][y][A] + t[x][y][B]) % mod;
dp[x][y][A] = 0;
dp[x][y][B] = 0;
}
}
}
// std::cout << '\n' << i << ": " << '\n';
// for(int x = 0; x <= n; x++) {
// for(int y = 0; y <= n; y++) {
// std::cerr << dp[x][y][A] + dp[x][y][B] + dp[x][y][C] << " ";
// }
// std::cout << '\n';
// }
}
std::vector sum(n + 1, std::vector<int>(n + 1, 0));
for(int i = 0; i <= n; i++) {
for(int j = 0; j <= n; j++) {
sum[i][j] = (dp[i][j][A] + dp[i][j][B] + dp[i][j][C]) % mod;
}
}
for(int i = 0; i <= n; i++) {
for(int j = 0; j <= n; j++) {
if(i + 1 <= n) sum[i + 1][j] += sum[i][j];
sum[i][j] %= mod;
}
}
for(int i = 0; i <= n; i++) {
for(int j = 0; j <= n; j++) {
if(j + 1 <= n) sum[i][j + 1] += sum[i][j];
sum[i][j] %= mod;
}
}
std::vector sumt(n + 1, std::vector<int>(n + 1, 0));
for(int x = 0; x <= n; x++) {
for(int y = 0; y <= n; y++) {
sumt[x][y] = dp[x][y][A] + dp[x][y][B] + dp[x][y][C];
sumt[x][y] %= mod;
}
}
for(int i = 0; i <= n; i++) {
for(int j = 0; j <= n; j++) {
if(i + 1 <= n) sumt[i + 1][j] += sumt[i][j];
sumt[i][j] %= mod;
}
}
int d = 0;
for(int i = 0; i < s.size(); i++) {
if(s[i] == '?') d++;
}
// for(int x = 0; x <= n; x++) {
// for(int y = 0; y <= n; y++) {
// std::cerr << dp[x][y][A] + dp[x][y][B] + dp[x][y][C] << " ";
// }
// std::cout << '\n';
// }
while(q--) {
int x, y, z;
std::cin >> x >> y >> z;
// x + y < d - z
ll ans = sum[x][y];
for(int j = 0; j <= n; j++) {
if(j > y) break;
int i = std::min(x, d - z - j - 1);
if(i < 0) break;
ans -= sumt[i][j];
ans %= mod;
// std::cout << i << '\n';
}
std::cout << (ans % mod + mod) % mod<< '\n';
}
}
int main()
{
//std::ios::sync_with_stdio(0);
//std::cin.tie(0);
//std::cout.tie(0);
int t = 1;
// std::cin >> t;
while(t--) solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3536kb
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: 3480kb
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: 0ms
memory: 3548kb
input:
1 1 ? 0 1 1
output:
2
result:
ok single line: '2'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3580kb
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: 3548kb
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: 4ms
memory: 3888kb
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: 4ms
memory: 3872kb
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: 30ms
memory: 4716kb
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: 31ms
memory: 4872kb
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:
224395430 913793437 4563726 384010157 10104 197660252 652156990 598792985 723977166 364727280 53305040 41149640 796157561 67704502 294652994 809150594 78104944 803262738 246287208 85913260 348499423 37880765 328268702 234513462 150732706 268625096 653465782 290988783 705467745 701986883 76843865 706...
result:
wrong answer 1st lines differ - expected: '490475656', found: '224395430'