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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
#620257#5278. Mex and Cardshbhz_zcyWA 5ms23624kbC++142.0kb2024-10-07 17:12:032024-10-07 17:12:17

Judging History

你现在查看的是最新测评结果

  • [2024-10-07 17:12:17]
  • 评测
  • 测评结果:WA
  • 用时:5ms
  • 内存:23624kb
  • [2024-10-07 17:12:03]
  • 提交

answer

//g++ m.cpp -o m -g -std=c++14 -O0 -Wall
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<set>
#include<vector>
#define LL long long
using namespace std;
int qd(){
    int rt=0;char c=getchar();
    while(c<'0'||c>'9')  c=getchar();
    while('0'<=c&&c<='9')  rt=(rt<<3)+(rt<<1)+c-48,c=getchar();
    return rt;
}
const int maxn=2e5+10,_max2n=4e5;
struct node{int t,v;};
bool operator<(const node &x,const node &y){return x.t<y.t;}
set<node>f;
set<int>tn[maxn<<1];
int N,a[maxn<<1];LL ans=0;//7 5 3  -> 7 6 (5) 3   no 7 (5) 4 3
node backf(){auto it=f.end();if(it!=f.begin())  return *--it;else return {1,1};}
void calc(int t){
    auto it=f.lower_bound({t,0});
    if(it->t!=t){
        it=f.insert(it,(node){t,a[t]});
        auto l=it,r=it;l--,r++;
        ans+=1LL*(r->t-it->t)*(it->v-l->v);
    }
    else{
        auto r=it;r++;
        ans+=1LL*(r->t-it->t)*(a[t]-it->v);
        f.erase(it);
        it=f.insert({t,a[t]}).first;
    }
    auto l=it,r=it;l--,r++;
    if(l->v<=it->v){
        ans-=1LL*(r->t-it->t)*(it->v-l->v);
        f.erase(it);
    }
    else if(r!=f.end()&&it->v<=r->v){
        l=r=it=r;l--,r++;
        ans-=1LL*(r->t-it->t)*(it->v-l->v);
        f.erase(it);
    }
}
int main(){
    //freopen("a.in","r",stdin);
    //freopen("a.out","w",stdout);
    N=qd();
    for(int i=1;i<=N;i++)  a[i]=qd();
    f.insert({0,_max2n});ans=-_max2n;
    for(int i=1;i<=N+1;i++){
        if(a[i]<backf().v)  ans+=1LL*backf().v*(i-backf().t),f.insert({i,a[i]});
        if(a[i])  tn[a[i]].insert(i);
    }
    if(backf().t!=N+1)  f.insert({N+1,0});
    printf("%lld\n",ans);
    int Q=qd();
    while(Q--){
        int t=qd(),v=qd()+1,_av=a[v];a[v]+=t==1?1:-1;
        if(_av)  tn[_av].erase(tn[_av].find(v));
        if(a[v])  tn[a[v]].insert(tn[a[v]].upper_bound(v),v);
        calc(v);
        auto it=tn[_av].upper_bound(v);
        if(it!=tn[_av].end())  calc(*it);
        printf("%lld\n",ans);
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 22964kb

input:

5
2 1 3 0 2
6
1 0
1 1
2 4
1 3
2 1
2 1

output:

4
5
7
7
9
7
3

result:

ok 7 numbers

Test #2:

score: 0
Accepted
time: 0ms
memory: 23308kb

input:

1
0
0

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 5ms
memory: 23624kb

input:

10
3 8 1 4 10 3 10 9 7 10
20
2 5
1 4
1 2
1 4
1 3
1 3
1 0
2 8
1 5
1 4
1 0
1 3
1 8
1 6
1 4
1 1
1 5
1 9
1 6
2 7

output:

14
14
14
22
22
22
22
24
24
24
24
26
26
26
26
26
26
26
26
26
26

result:

ok 21 numbers

Test #4:

score: -100
Wrong Answer
time: 0ms
memory: 23500kb

input:

10
9 8 7 5 5 4 3 2 1 1
20
2 4
1 8
2 6
1 2
1 2
2 5
2 2
1 0
1 6
1 6
2 9
1 2
2 7
2 8
2 3
1 9
1 7
1 4
2 6
1 7

output:

45
44
45
44
45
45
44
44
45
46
46
45
45
43
43
42
39
39
39
39
40

result:

wrong answer 17th numbers differ - expected: '43', found: '39'