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QOJ

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
#547258#9104. Zayin and Forestwzxtsl#AC ✓726ms160888kbC++17898b2024-09-04 19:50:102024-09-04 19:50:10

Judging History

你现在查看的是最新测评结果

  • [2024-09-04 19:50:10]
  • 评测
  • 测评结果:AC
  • 用时:726ms
  • 内存:160888kb
  • [2024-09-04 19:50:10]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=1e6+7;
#define int long long
#define lowbit(x) (x&(-x))
int a[500005];
map<int,int> c;
int n,m;
//区间修改
int update(int pos,int k){//pos表示修改点的位置,K表示修改的值也即+K操作
    int cnt=1;
    for(int i=pos;i<=n;i+=lowbit(i)){
        c[i]+=cnt*k;
        cnt++;
    }
    return 0;
}
//单点查询
int ask_qujian(int pos){//返回区间pos到1的总和,由于是使用差分数组维护因此使用前缀和
    int ans=0;
    for(int i=pos;i;i-=lowbit(i)){
        ans+=c[i];
    }
    return ans;
}
signed main(){
    cin>>n>>m;
    while(m--){
        int a;
        int x,y;
        cin>>a;
        if(a==1){
            cin>>x>>y;
            update(x,y);
        }else{
            cin>>x>>y;
            cout<<ask_qujian(y)-ask_qujian(x-1)<<endl;
        }
    }
}

详细

Test #1:

score: 100
Accepted
time: 53ms
memory: 17224kb

input:

1000000000 20000
2 384578735 526547442
1 64211261 592970906
1 512065247 448267721
1 44993150 127180320
1 880319036 927623947
1 170536687 572121854
1 896600029 804033011
1 666246328 754201635
1 654066651 179982083
2 240989825 984888006
2 372004567 858916479
2 76127818 98606736
1 181794163 902842353
1...

output:

0
43148875202
17613404710
0
32808578044
28190043566
15641637055
78276219892
14955165236
20262224725
105057452192
17002492367
57916137452
27165464255
72766353838
39458327919
38294102627
264448717384
0
70928519548
279674530483
88885017175
111664599432
69703816663
211506104092
104120007714
34403738515
...

result:

ok 6649 lines

Test #2:

score: 0
Accepted
time: 448ms
memory: 66808kb

input:

1000000000000000000 100000
1 384578735 526547442
1 64211261 592970906
1 512065247 448267721
1 44993150 127180320
1 880319036 927623947
1 170536687 572121854
1 896600029 804033011
2 666246328 931651408754201635
1 654066651 179982083
1 984888006 240989825
1 372004567 858916479
1 76127818 98606736
1 18...

output:

144205553442
497561506762
903930740555
878459229726
689906696633
859703313829
735231510045
1177875391120
1461659121798
1612314483744
2027462020547
1991476058156
2381861014705
2033973986301
2117738140401
2946661001323
2187638958334
2593068002437
1854182975909
2262561461341
3038788266419
3070435321746...

result:

ok 12561 lines

Test #3:

score: 0
Accepted
time: 726ms
memory: 160888kb

input:

1000000000000000000 100000
1 395661363384578735 526547442
1 843068846064211261 592970906
1 550209039512065247 448267721
1 79278526044993150 127180320
1 193676380880319036 927623947
1 81194098170536687 572121854
1 223947079896600029 804033011
2 921340893666246328 931651408754201635
1 3605022006540666...

output:

0
152171177084
261154456848
98759395571
132967101279
214003153997
109857765028
569583036989
221377921411
943235254745
1036051470108
1290577544766
795223506189
1251272020902
662604469794
907615793356
1786684858550
488655543368
1495388560030
1818589934911
151873013358
717984689394
2039336496945
378996...

result:

ok 12561 lines