比赛 |
2024暑期C班集训1 |
评测结果 |
AAAAAAAAWWWWWWWWWWWW |
题目名称 |
水母序列 |
最终得分 |
40 |
用户昵称 |
┭┮﹏┭┮ |
运行时间 |
1.207 s |
代码语言 |
C++ |
内存使用 |
16.78 MiB |
提交时间 |
2024-07-01 09:01:16 |
显示代码纯文本
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define db double
const int N = 5e5+10,M = 1e6+1e5;
const ll mod = 1e9+7;
ll read(){
ll x = 0,f = 1;char c = getchar();
for(;c < '0' || c > '9';c = getchar())if(c == '-')f = -1;
for(;c <= '9' && c >= '0';c = getchar())x = (x<<1) + (x<<3) + c-'0';
return x * f;
}
int n,m;
int p[M+10],cnt,a[N];
bool v[M+10];
void pre(){
v[0] = v[1] = 1;
for(int i = 2;i <= M;i++){
if(!v[i])p[++cnt] = i;
for(int j = 1;j <= cnt && i <= M/p[j];j++){
v[i * p[j]] = 1;
if(i % p[j] == 0)break;
}
}
}
int s[1010][1010];
void work1(){
for(int i = 1;i <= n;i++){
int x = 0;
for(int j = i;j <= n;j++){
x |= a[j];
if(!v[x])s[i][j]++;
s[i][j] += s[i][j-1];
}
}
for(int i = 1;i <= n;i++)
for(int j = i;j <= n;j++)s[i][j] += s[i-1][j];
for(int i = 1;i <= m;i++){
int l = read(),r = read();
printf("%d\n",s[r][r] - s[l-1][r]);
}
}
void solve(){
pre();
n = read(),m = read();
for(int i = 1;i <= n;i++)a[i] = read();
if(n <= 1000){
work1();
return;
}
}
int main(){
freopen("Jelly.in","r",stdin);
freopen("Jelly.out","w",stdout);
int t = 1;
while(t--)solve();
return 0;
}