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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 |
---|---|---|---|---|---|---|---|---|---|
#722603 | #9536. Athlete Welcome Ceremony | monui | WA | 175ms | 225700kb | C++23 | 1.8kb | 2024-11-07 19:38:23 | 2024-11-07 19:38:23 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
const int N=301;
const int M=1e9+7;
int n,q;
int dp[3][N][N][N];
int sum[N][N][N];
void solve(){
cin>>n>>q;
string s;cin>>s;
s="#"+s;
int cnt=0;
if(s[1]=='a') dp[0][0][0][0]=1;
else if(s[1]=='b') dp[1][0][0][0]=1;
else if(s[1]=='c') dp[2][0][0][0]=1;
else dp[0][1][0][0]=dp[1][0][1][0]=dp[2][0][0][1]=1,++cnt;
for(int i=2;i<=n;i++){
if(s[i]=='?') ++cnt;
for(int j=cnt;j>=0;j--){
for(int k=cnt-j;k>=0;k--){
int p=cnt-j-k;
if(s[i]=='?'){
if(j) dp[0][j][k][p]=(dp[1][j-1][k][p]+dp[2][j-1][k][p])%M;
if(k) dp[1][j][k][p]=(dp[0][j][k-1][p]+dp[2][j][k-1][p])%M;
if(p) dp[2][j][k][p]=(dp[0][j][k][p-1]+dp[1][j][k][p-1])%M;
}
else{
if(s[i]=='a') {
dp[0][j][k][p]=(dp[1][j][k][p]+dp[2][j][k][p])%M;
dp[1][j][k][p]=dp[2][j][k][p]=0;
}
if(s[i]=='b') {
dp[1][j][k][p]=(dp[0][j][k][p]+dp[2][j][k][p])%M;
dp[0][j][k][p]=dp[2][j][k][p]=0;
}
if(s[i]=='c') {
dp[2][j][k][p]=(dp[0][j][k][p]+dp[1][j][k][p])%M;
dp[0][j][k][p]=dp[1][j][k][p]=0;
}
}
if(i==n) sum[j][k][p]=(dp[0][j][k][p]+dp[1][j][k][p]+dp[2][j][k][p])%M;
}
}
}
for(int i=0;i<N;i++){
for(int j=0;j<N;j++){
int ans=0;
for(int k=0;k<N;k++){
ans+=sum[i][j][k];ans%=M;
if(j) sum[i][j][k]=(sum[i][j-1][k]+ans)%M;
else sum[i][j][k]=ans;
}
}
for(int j=0;j<N;j++){
for(int k=0;k<N;k++){
if(i) sum[i][j][k]=(sum[i-1][j][k]+sum[i][j][k])%M;
}
}
}
while(q--){
int a,b,c;cin>>a>>b>>c;
cout<<sum[a][b][c]<<endl;
}
}
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int __T=1;//cin>>__T;
while(__T--) solve();
}
詳細信息
Test #1:
score: 100
Accepted
time: 163ms
memory: 222736kb
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: 175ms
memory: 225700kb
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: 140ms
memory: 221568kb
input:
1 1 ? 0 1 1
output:
0
result:
wrong answer 1st lines differ - expected: '2', found: '0'