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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#22951 | #2887. 区间矩阵乘法 | hy_zheng_zai_nei_juan# | TL | 0ms | 5652kb | C++20 | 1.8kb | 2022-03-11 12:03:20 | 2022-04-30 02:10:22 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<ctime>
#include<vector>
#include<queue>
#include<algorithm>
#include<string>
#include<sstream>
#include<cctype>
#include<cmath>
#include<iomanip>
#include<map>
#include<stack>
#include<set>
#include<functional>
#define in(x) x=read()
#define qr read()
// #define int ll
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
namespace fastIO
{
#define BUF_SIZE 100000
bool IOerror=0;
inline char nc()
{
static char buf[BUF_SIZE],*p1=buf+BUF_SIZE,*pend=buf+BUF_SIZE;
if (p1==pend){
p1=buf; pend=buf+fread(buf,1,BUF_SIZE,stdin);
if (pend==p1){IOerror=1;return -1;}
}
return *p1++;
}
inline bool blank(char ch){return ch==' '||ch=='\n'||ch=='\r'||ch=='\t';}
inline ll read()
{
bool sign=0; char ch=nc();ll x=0;
for (;blank(ch);ch=nc());
if (IOerror)return 0;
if (ch=='-')sign=1,ch=nc();
for (;ch>='0'&&ch<='9';ch=nc())x=x*10+ch-'0';
if (sign)x=-x;
return x;
}
#undef BUF_SIZE
};
using namespace fastIO;
#define blk 450
unsigned sum[200010][500];
int a[1000010];
signed main()
{
//freopen(".in","r",stdin);
//freopen(".out","w",stdout);
int n=qr;
for(int i=1;i<=n;i++)in(a[i]);
for(int i=1;i<=n;i++)
{
for(int j=1;j<=max(i,blk);j++)sum[i][j]=sum[i-j][j]+a[i];
}
int m=qr;
while(m--)
{
int d=qr,p1=qr,p2=qr;
unsigned ans=0;
for(int p=p2,j=0;j<d;p+=d,j++)
{
// cout<<p+d-1<<"-"<<p-1<<'\n';
// cout<<j<<":"<<(sum[p+d-1][1]-sum[p-1][1])<<' '<<(sum[p1+d*(d-1)+j][d]-sum[p1+j-d][d])<<'\n';
ans+=(sum[p+d-1][1]-sum[p-1][1])*(sum[p1+d*(d-1)+j][d]-sum[p1+j-d][d]);
}
cout<<ans<<'\n';
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 5652kb
input:
8 1 2 2 2 2 2 1 1 2 2 2 2 1 3 7
output:
32 2
result:
ok 2 lines
Test #2:
score: -100
Time Limit Exceeded
input:
200000 110569 155 159393 154631 169597 134901 75060 60085 189794 169502 10184 170809 170894 5697 83892 99814 97985 11604 39943 171446 77088 44463 60432 121559 54578 115592 151722 115322 147103 126168 55464 42044 181426 196809 58680 173065 136429 76030 109558 78475 161094 46875 1564 177386 108053 828...