NOI.AC

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#213968	#2739. 阿空的核聚变	laiyishi	60	84ms	1228kb	C++11	463b	2024-11-14 20:18:02	2024-11-14 23:05:49

answer

#include<bits/stdc++.h>
using namespace std;
int n,q;char s[500005];
void solve(){
	int l,r,cur;scanf("%d%d",&l,&r);
	stack<int>stk;
	for(int i=l;i<=r;i++){
		cur=s[i]-'a';
		while(!stk.empty()){
			int x=stk.top();
			if(x!=cur)break;
			stk.pop(),cur++;
		}
		if(cur<26){
			stk.push(cur);
		}
	}
	if(stk.empty())printf("Yes\n");
	else printf("No\n");
}
int main(){
	scanf("%s",s+1);n=strlen(s+1);
	scanf("%d",&q);
	while(q--)solve();
}

Source code, Language: C++11

Details

小提示：点击横条可展开更详细的信息

Test #1:

score: 10

Accepted

time: 2ms

memory: 1224kb

input:

wwwwyyyvttttutsrqquuusstttuvutrrsvvwxvvwvvvvwuuvwvvwwuuurrssswywvvwvurrstxwvvxxxxxxyzvvvssrrsttvuuwy...

output:

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

result:

ok 3000 lines

Test #2:

score: 10

Accepted

time: 1ms

memory: 1228kb

input:

wvvvvwwttuvwwyyxxwvvwwzywvttuusstuuwyyywwxyywvuttuuuttwxwwyyyxxzzxxxwvuuyyyyzvvvvwvvvvwwwztssuuuwwwy...

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
Y...

result:

ok 3000 lines

Test #3:

score: 10

Accepted

time: 2ms

memory: 1228kb

input:

zywwxyyzyyvuttwvvwxutssvuuvyyzzyxxyxxzzyyxxyxxxxzyxxwuuvwwxwwyxxyvvttuvxyyyxxyyyyyxxyyxwwxxyyyvuuwww...

output:

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

result:

ok 3000 lines

Test #4:

score: 10

Accepted

time: 16ms

memory: 1228kb

input:

zzzyywwxyzxxyzyyzzyyyyzyyzyxxzzzzyyyyyxxyyzzyxxzzyyzzzyyzyyzzzzyyyyzzzxwwwwxzzzzyyzxxyyyzzyyyyyyzzzy...

output:

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

result:

ok 3000 lines

Test #5:

score: 10

Accepted

time: 30ms

memory: 1228kb

input:

yxxyxxzzyyxxyyxxxxxxxwvuuxvvwyyxxxxyyyyxxwwxzyxxyxxyyyxwvuttywvvxxxywwxywwxxwuuuuzxxyxwwxvvwwuuvxyww...

output:

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

result:

ok 3000 lines

Test #6:

score: 10

Accepted

time: 33ms

memory: 1228kb

input:

xxyywvvxyuuuuvvwwxxxttuvvvzvvwwwyyywwsstuuttvvwvttuwvurrrrsqqrxxvvttttvxuuvwvusstvvxwwyxxzzxwwxutsss...

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 3000 lines

Test #7:

score: 0

Time Limit Exceeded

input:

yyzzzyyzzzyyzzzzyzzyyzyyzzyzzyzzzzyyzyyzzyzyzyyzyzyzzzzzzyzzyzzzyyyzyyzzyyyzzyzyyzzzyyzyyzzzyzyzyzyy...

output:

No
Yes
No
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Yes
No
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No...

result:

Test #8:

score: 0

Time Limit Exceeded

input:

yzzzzyzzyyzyzzzyyyzyyzyzzzyzyzzzzzzzyyyzyyzyzzzzyzzyyyyyzyyzyzyyzzzyzzyzzyzzzzzyyzyyyyyzyyyzzyzyzzyy...

output:

No
No
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Yes
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Yes
Yes
No
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N...

result:

Test #9:

score: 0

Time Limit Exceeded

input:

yyyyxxyzxxxxxxwvuuvvwzxxwwvuuvuuxutssvutssuttxxyxxxvvttuvxxywwxxwwyywwxyyywwxzyxwwxxywwwwyyyywwxyyvv...

output:

No
No
No
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No
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No
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N...

result:

Test #10:

score: 0

Time Limit Exceeded

input:

ywwxyyxxyzzzyxxyyyyzzzzzzyyzzyxxzzyyyxxzzzywwxzzyyzwwxxwwyyzyyzzzyyzyyyxwwyxxyyzyyyxxyyzyxxyyzzywwxw...

output:

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