NOI.AC
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #215022 | #2037. a | Charlo | 100 | 4975ms | 67784kb | C++ | 1.2kb | 2024-11-25 20:04:33 | 2024-11-25 23:07:41 |
answer
#include<bits/stdc++.h>
const int N=1e6+5;
int n,q;
std::string s;
struct node{
int ans,lr,rl;
};
node merge(node a,node b){
node c;
int res=std::min(a.rl,b.lr);
c.ans=a.ans+b.ans+res;
c.lr=a.lr+b.lr-res;
c.rl=b.rl+a.rl-res;
return c;
}
struct segtree{
int l,r;
node ans1,ans2;
}tree[N<<2];
void pushup(int u){
tree[u].ans1=merge(tree[u<<1].ans1,tree[u<<1|1].ans1);
tree[u].ans2=merge(tree[u<<1].ans2,tree[u<<1|1].ans2);
}
void build(int u,int l,int r){
tree[u].l=l,tree[u].r=r;
if(l==r){
tree[u].ans1.lr=tree[u].ans2.rl=(s[l]==')');
tree[u].ans1.rl=tree[u].ans2.lr=(s[l]=='(');
return;
}
int mid=(l+r)>>1;
build(u<<1,l,mid);
build(u<<1|1,mid+1,r);
pushup(u);
}
node query(int u,int l,int r){
if(l<=tree[u].l&&tree[u].r<=r)return tree[u].ans1;
int mid=(tree[u].l+tree[u].r)>>1;
if(r<=mid)return query(u<<1,l,r);
else if(l>mid)return query(u<<1|1,l,r);
else return merge(query(u<<1,l,r),query(u<<1|1,l,r));
}
int main(){
std::ios::sync_with_stdio(false);
std::cin.tie(0);
std::cin>>s>>q;s=" "+s;n=s.size()-1;
build(1,1,n);
while(q--){
int l,r;
std::cin>>l>>r;
std::cout<<query(1,l,r).ans*2<<'\n';
}
return 0;
}
详细
小提示：点击横条可展开更详细的信息
Test #1:
score: 10
Accepted
time: 0ms
memory: 1336kb
input:
(()))())))(())()())()()))((((()()))((((()((())()))(()((((()(())(())(()))())()())()())(())(()()((((((...
output:
854 136 108 12 836 206 550 252 536 266 220 344 830 502 170 290 522 526 464 98 160 10 840 298 332 272...
result:
ok 1000 lines
Test #2:
score: 10
Accepted
time: 0ms
memory: 1332kb
input:
)))((()())((())((()()())())(((())())((()((())(())()((((((())))((()(()())))(()()(())())()))(()()))(((...
output:
30 22 96 382 252 154 386 56 434 102 590 456 114 56 346 252 324 12 138 184 320 52 380 470 64 476 40 4...
result:
ok 1000 lines
Test #3:
score: 10
Accepted
time: 0ms
memory: 1332kb
input:
(()((())))))))((())(()()))()))()()())(()))(())))))))(((())((((((((((()((()())()(()(())(()())(()))(((...
output:
674 192 100 168 206 244 378 746 184 196 196 602 414 302 224 358 232 482 154 448 168 704 232 232 810 ...
result:
ok 1000 lines
Test #4:
score: 10
Accepted
time: 1ms
memory: 1336kb
input:
))))))))()))())()(()()())()())(((()())(((()(((()()))(()()()))())(()()(()()())()(())()())))))()((((()...
output:
168 378 240 380 548 324 54 492 724 276 184 398 66 452 404 192 192 594 192 128 918 424 516 46 108 430...
result:
ok 1000 lines
Test #5:
score: 10
Accepted
time: 1ms
memory: 1332kb
input:
((())))(()((()()))()))))((((()()()()()()()))()()(()(())(()((()))()((())))))()(((()())()))()())))(())...
output:
634 386 334 6 246 372 226 424 274 168 254 448 312 112 532 126 594 780 112 150 68 470 260 150 22 322 ...
result:
ok 1000 lines
Test #6:
score: 10
Accepted
time: 1ms
memory: 1332kb
input:
))((()))()(())())(()()))))()()((((()()())()((())(())))))(())))()())()()(())()(())())(()())))(()()))(...
output:
728 224 580 200 784 152 280 194 0 664 278 260 630 328 816 470 388 736 82 132 406 440 140 12 276 776 ...
result:
ok 1000 lines
Test #7:
score: 10
Accepted
time: 1236ms
memory: 67784kb
input:
((((()))()()())(()))((()())(((())))(()((()))))))()()))()))((((()(()(()()()(()(())(()())))(((()())))(...
output:
142860 235344 446706 759772 134088 748980 83870 685562 31730 572204 366368 67746 18554 603330 946486...
result:
ok 1000000 lines
Test #8:
score: 10
Accepted
time: 1193ms
memory: 67780kb
input:
())))()))))(()))()())(()(()))((()))))(()))((())()((()(()()((())(())()))(()))))())(((()(())()(())()()...
output:
583148 425884 255036 448502 200322 256890 167684 114904 55236 440164 138094 879918 580038 452166 984...
result:
ok 1000000 lines
Test #9:
score: 10
Accepted
time: 1298ms
memory: 67780kb
input:
)()((()())(())())(()())))(((()())()()(((((()(()()(()(())(()())((()(((()()))()))))()(((())(((((()()()...
output:
47942 241400 323510 553980 111490 20570 51892 169422 82080 124416 107806 804528 123414 274334 135650...
result:
ok 1000000 lines
Test #10:
score: 10
Accepted
time: 1245ms
memory: 67784kb
input:
())()()(()())))())())))))))(()((()()(((()))(()(())))(())))())(()((()))()))(()))()((((((())(())(())((...
output:
487878 425694 419984 176404 493462 782462 63276 27548 109942 308166 354282 302574 697816 3128 144748...
result:
ok 1000000 lines
