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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 |
---|---|---|---|---|---|---|---|---|---|
#702348 | #9536. Athlete Welcome Ceremony | ucup-team3661# | WA | 40ms | 642760kb | C++20 | 2.2kb | 2024-11-02 15:47:53 | 2024-11-02 15:47:55 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const ll mod = 1e9+7;
void add(ll &a , ll b){
a += b;
a %= mod;
}
ll dp[301][301][301][3];
int main(){
int N; cin >> N;
int Q; cin >> Q;
string S; cin >> S;
for(int i = 0; i < 301; i++){
for(int j = 0; j < 301; j++){
for(int k = 0; k < 301; k++){
for(int l = 0; l < 3; l++){
dp[i][j][k][l] = 0;
}
}
}
}
if(S[0] == '?'){
dp[0][1][0][0] = 1;
dp[0][0][1][1] = 1;
dp[0][0][0][2] = 1;
}
else{
if(S[0] == 'a')dp[0][1][0][0] = 1;
if(S[0] == 'b')dp[0][0][1][1] = 1;
if(S[0] == 'c')dp[0][0][0][2] = 1;
}
for(int i = 1; i < N; i++){
for(int j = 0; j <= N; j++){
for(int k = 0; k <= N; k++){
for(int pre = 0; pre < 3; pre++){
if(S[i] == '?'){
if(j-1 >= 0 && pre != 0)add(dp[i][j][k][0] , dp[i-1][j-1][k][pre]);
if(k-1 >= 0 && pre != 1)add(dp[i][j][k][1] , dp[i-1][j][k-1][pre]);
if(pre != 2)add(dp[i][j][k][2] , dp[i-1][j][k][pre]);
}
else{
ll d = S[i] - 'a';
if(d == pre)continue;
if(d == 0){
if(j-1 >= 0)add(dp[i][j][k][0] , dp[i-1][j-1][k][pre]);
}
if(d == 1){
if(k-1 >= 0)add(dp[i][j][k][1] , dp[i-1][j][k-1][pre]);
}
if(d == 2){
add(dp[i][j][k][2] , dp[i-1][j][k][pre]);
}
}
}
}
}
}
vector<vector<ll>> sum(N+1 , vector<ll>(N+1));
for(int i = 0; i <= N; i++){
for(int j = 0; j < N; j++){
add(sum[i][j+1] , sum[i][j]);
for(int k = 0; k < 3; k++)add(sum[i][j+1] , dp[N-1][i][j][k]);
}
}
int ba = 0, bb = 0, bc = 0;
for(int i = 0; i < N; i++){
if(S[i] == 'a')ba++;
if(S[i] == 'b')bb++;
if(S[i] == 'c')bc++;
}
while(Q--){
int A,B,C; cin >> A >> B >> C;
A += ba;
B += bb;
C += bc;
ll ans = 0;
for(int a = 0; a <= A; a++){
if(B+1 <= N-a-C)continue;
add(ans , sum[a][B+1]);
add(ans , mod - sum[a][max(0 , N-a-C)]);
}
cout << ans << endl;
}
return 0;
for(int k = 0; k < N; k++){
for(int i = 0; i <= N; i++){
for(int j = 0; j <= N; j++){
cout << dp[k][i][j][0]+dp[k][i][j][1]+dp[k][i][j][2] << ' ';
}
cout << endl;
}
cout << endl;
}
}
詳細信息
Test #1:
score: 100
Accepted
time: 27ms
memory: 642760kb
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: 36ms
memory: 642692kb
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: 40ms
memory: 642620kb
input:
1 1 ? 0 1 1
output:
0
result:
wrong answer 1st lines differ - expected: '2', found: '0'