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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 |
---|---|---|---|---|---|---|---|---|---|
#747410 | #9536. Athlete Welcome Ceremony | ucup-team1412 | WA | 2ms | 18044kb | C++23 | 4.6kb | 2024-11-14 17:07:23 | 2024-11-14 17:07:24 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
const ll p = 1e9 + 7;
const ll MAXN = 301;
ll dp[MAXN][MAXN][MAXN][4];
ll g[MAXN][MAXN][MAXN];
ll n, t, q;
string c;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> q;
cin >> c;
string s = "0" + c;
ll cnt = 0;
ll cnta = 0, cntb = 0, cntc = 0;
for (ll i = 1; i <= n; i++) {
if (s[i] == '?') cnt++;
if (s[i] == 'a') cnta++;
if (s[i] == 'b') cntb++;
if (s[i] == 'c') cntc++;
if (i == 1) {
if (s[i] == 'a') {
dp[1][0][0][1] = 1;
}
else if (s[i] == 'b') {
dp[0][1][0][2] = 1;
}
else if (s[i] == 'c') {
dp[0][0][1][3] = 1;
}
else {
dp[1][0][0][1] = 1;
dp[0][1][0][2] = 1;
dp[0][0][1][3] = 1;
}
}
else {
for (ll a = 0; a <= i; a++) {
for (ll b = 0; a + b <= i; b++) {
if (s[i] == 'a') {
if (a != 0) {
dp[a][b][i - a - b][1] = dp[a - 1][b][i - a - b][2] + dp[a - 1][b][i - a - b][3];
dp[a][b][i - a - b][1] %= p;
}
}
else if (s[i] == 'b') {
if (b != 0) {
dp[a][b][i - a - b][2] = dp[a][b - 1][i - a - b][1] + dp[a][b - 1][i - a - b][3];
dp[a][b][i - a - b][2] %= p;
}
}
else if (s[i] == 'c') {
if (i - a - b != 0) {
dp[a][b][i - a - b][3] = dp[a][b][i - a - b - 1][1] + dp[a][b][i - a - b - 1][2];
dp[a][b][i - a - b][3] %= p;
}
}
else {
if (a != 0) {
dp[a][b][i - a - b][1] = dp[a - 1][b][i - a - b][2] + dp[a - 1][b][i - a - b][3];
dp[a][b][i - a - b][1] %= p;
}
if (b != 0) {
dp[a][b][i - a - b][2] = dp[a][b - 1][i - a - b][1] + dp[a][b - 1][i - a - b][3];
dp[a][b][i - a - b][2] %= p;
}
if (i - a - b != 0) {
dp[a][b][i - a - b][3] = dp[a][b][i - a - b - 1][1] + dp[a][b][i - a - b - 1][2];
dp[a][b][i - a - b][3] %= p;
}
}
}
}
}
}
// cout << dp[1][1][1][1] + dp[1][1][1][2] + dp[1][1][1][3];
// for (ll x = 1; x <= n + 1; x++) {
// for (ll y = 1; y <= n + 1; y++) {
// for (ll z = 1; z <= n + 1; z++) {
// if (x + y + z > n + 3) break;
// g[x][y][z] = g[x - 1][y][z] + g[x][y - 1][z] + g[x][y][z - 1] - g[x][y - 1][z - 1] - g[x - 1][y][z - 1] - g[x - 1][y - 1][z] + g[x - 1][y - 1][z - 1];
// g[x][y][z] %= p;
// if (x + y + z == n + 3) {
// g[x][y][z] += (dp[x][y][z][1] + dp[x][y][z][2] + dp[x][y][z][3]) % p;
// g[x][y][z] %= p;
// }
// }
// }
// }
// for (ll i = 0; i <= n; i++) {
// for (ll j = 0; j <= n; j++) {
// for (ll k = 1; k <= 3; k++) {
// g[i+1][j+1][n-i-j+1]+=dp[]
// }
// }
// }
for (ll i = 0; i <= n; i++) {
for (ll j = 0; j <= n; j++) {
for (ll k = 0; k <= n; k++) {
g[i][j][k] = g[max(i - 1, 0ll)][j][k] + g[i][max(j - 1, 0ll)][k] + g[i][j][max(0ll, k - 1)] - g[max(0ll, i - 1)][max(0ll, j - 1)][k] - g[max(0ll, i - 1)][j][max(0ll, k - 1)] - g[i][max(0ll, j - 1)][max(0ll, k - 1)] + g[max(0ll, i - 1)][max(0ll, j - 1)][max(0ll, k - 1)];
g[i][j][k] %= p;
if (i + j + k == n) {
ll now = 0;
for (ll t = 1; t <= 3; t++) {
now += dp[i][j][k][t];
}
g[i][j][k] += now;
}
}
}
}
while (q--) {
ll a, b, c;
cin >> a >> b >> c;
cout << g[a + cnta][b + cntb][c + cntc] << endl;
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 13992kb
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: 18044kb
input:
6 3 ?????? 2 2 2 2 3 3 3 3 3
output:
30 72 96
result:
ok 3 lines
Test #3:
score: -100
Wrong Answer
time: 1ms
memory: 7880kb
input:
1 1 ? 0 1 1
output:
0
result:
wrong answer 1st lines differ - expected: '2', found: '0'