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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#214003#2739. 阿空的核聚变a_sad_soul1002578ms118848kbC++11946b2024-11-14 22:09:272024-11-14 23:09:52

answer

#include<bits/stdc++.h>
using namespace std;
const int MAXN =5e5+10;
char s[MAXN];
int nxt[MAXN][30];
int p[MAXN][30];
int n;
void Init(){
    for(int i=1;i<=n+4;++i){
        for(int j=0;j<=20;++j)nxt[i][j]=n+3;
        for(int j=0;j<=26;++j)p[i][j]=n+3;
    }
    for(int i=n;i;--i){
        p[i][s[i]-'a']=i+1;
        for(int j=s[i]-'a'+1;j<=26;++j)p[i][j]=p[p[i][j-1]][j-1];
        nxt[i][0]=p[i][26];
        for(int j=1;j<=20;++j)nxt[i][j]=nxt[nxt[i][j-1]][j-1];
        for(int j=0;j<26;++j)if(p[i][j]==n+3)p[i][j]=p[nxt[i][0]][j];
    }
}
bool check(int l,int r){
    for(int i=20;~i;--i){
        if(nxt[l][i]<=r+1)l=nxt[l][i];
        if(l==r+1)return true;
    }
    return false;
}
int main(){
    scanf("%s",s+1);n=strlen(s+1);Init();
    int q;scanf("%d",&q);
    while(q--){
        int l,r;scanf("%d%d",&l,&r);
        if(check(l,r))puts("Yes");
        else puts("No");
    }
    return 0;
}

Details

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 0ms
memory: 1200kb

input:

wwwwyyyvttttutsrqquuusstttuvutrrsvvwxvvwvvvvwuuvwvvwwuuurrssswywvvwvurrstxwvvxxxxxxyzvvvssrrsttvuuwy...

output:

No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
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No
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No
No
No
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No
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No
No
No
No
...

result:

ok 3000 lines

Test #2:

score: 10
Accepted
time: 0ms
memory: 1200kb

input:

wvvvvwwttuvwwyyxxwvvwwzywvttuusstuuwyyywwxyywvuttuuuttwxwwyyyxxzzxxxwvuuyyyyzvvvvwvvvvwwwztssuuuwwwy...

output:

No
No
No
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No
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No
No
No
No
No
No
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No
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No
No
No
No
No
No
No
Y...

result:

ok 3000 lines

Test #3:

score: 10
Accepted
time: 0ms
memory: 1200kb

input:

zywwxyyzyyvuttwvvwxutssvuuvyyzzyxxyxxzzyyxxyxxxxzyxxwuuvwwxwwyxxyvvttuvxyyyxxyyyyyxxyyxwwxxyyyvuuwww...

output:

No
No
No
No
No
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No
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No
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No
Yes
No
No
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No
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No
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No
No
No
...

result:

ok 3000 lines

Test #4:

score: 10
Accepted
time: 2ms
memory: 1888kb

input:

zzzyywwxyzxxyzyyzzyyyyzyyzyxxzzzzyyyyyxxyyzzyxxzzyyzzzyyzyyzzzzyyyyzzzxwwwwxzzzzyyzxxyyyzzyyyyyyzzzy...

output:

No
No
No
Yes
No
Yes
No
No
Yes
No
Yes
No
No
No
No
No
No
Yes
No
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Yes
No
No
N...

result:

ok 3000 lines

Test #5:

score: 10
Accepted
time: 0ms
memory: 1888kb

input:

yxxyxxzzyyxxyyxxxxxxxwvuuxvvwyyxxxxyyyyxxwwxzyxxyxxyyyxwvuttywvvxxxywwxywwxxwuuuuzxxyxwwxvvwwuuvxyww...

output:

No
Yes
No
No
No
No
No
No
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No
No
No
No
No
No
No
No
No
Yes
No
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No
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No
No
No
No...

result:

ok 3000 lines

Test #6:

score: 10
Accepted
time: 0ms
memory: 1884kb

input:

xxyywvvxyuuuuvvwwxxxttuvvvzvvwwwyyywwsstuuttvvwvttuwvurrrrsqqrxxvvttttvxuuvwvusstvvxwwyxxzzxwwxutsss...

output:

No
No
No
No
No
No
No
No
No
No
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No
No
No
No
No
No
No
No
No
No
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No
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No
No
No
No
No
No
N...

result:

ok 3000 lines

Test #7:

score: 10
Accepted
time: 525ms
memory: 118848kb

input:

yyzzzyyzzzyyzzzzyzzyyzyyzzyzzyzzzzyyzyyzzyzyzyyzyzyzzzzzzyzzyzzzyyyzyyzzyyyzzyzyyzzzyyzyyzzzyzyzyzyy...

output:

No
Yes
No
No
Yes
No
No
No
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No
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No
No
No
No
No
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No
No
No...

result:

ok 1000000 lines

Test #8:

score: 10
Accepted
time: 516ms
memory: 118844kb

input:

yzzzzyzzyyzyzzzyyyzyyzyzzzyzyzzzzzzzyyyzyyzyzzzzyzzyyyyyzyyzyzyyzzzyzzyzzyzzzzzyyzyyyyyzyyyzzyzyzzyy...

output:

No
No
No
No
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No
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No
No
No
No
No
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No
No
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No
No
Yes
No
Yes
Yes
No
No
N...

result:

ok 1000000 lines

Test #9:

score: 10
Accepted
time: 754ms
memory: 118848kb

input:

yyyyxxyzxxxxxxwvuuvvwzxxwwvuuvuuxutssvutssuttxxyxxxvvttuvxxywwxxwwyywwxyyywwxzyxwwxxywwwwyyyywwxyyvv...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
N...

result:

ok 1000000 lines

Test #10:

score: 10
Accepted
time: 781ms
memory: 118844kb

input:

ywwxyyxxyzzzyxxyyyyzzzzzzyyzzyxxzzyyyxxzzzywwxzzyyzwwxxwwyyzyyzzzyyzyyyxwwyxxyyzyyyxxyyzyxxyyzzywwxw...

output:

No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
No
Yes
No
No
No
Yes
No
No
No
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Yes
No
No
No
No
No...

result:

ok 1000000 lines