//بسم الله الرحمن الرحيم
// i love mancity
#include<bits/stdc++.h>
#include <stack>
#include <vector>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define endl "\n"
#define ll long long
#define f(a) for(int i=0;i<a;i++)
#define rf(a) for(int i=a-1;i>=0;i--)
#define w int t;cin>>t;while(t--)
#define all(v) v.begin(),v.end()
#define yes cout<<"YES"<<endl;
#define no cout<<"NO"<<endl;
#define prev2pn(x) pow(2,floor(log2(x)))
#define MR_Robot iostream::sync_with_stdio(false);cin.tie(nullptr); \
cout.tie(nullptr);
#define arrRange(a , l , r) int _##a[(r-l)+1]; int* a= _##a-l;
#define ordered_set tree<int, null_type,less<int>, \
rb_tree_tag,tree_order_statistics_node_update>
using namespace std;
using namespace __gnu_pbds;
const ll MOD=1e9+7;
const int N= 1e3+5;
const double EPS = 1e-7;
const double PI = 3.14159265;
void fact(ll c){
int g=500000;
vector<ll>fa(g, 0);
fa[0]=1;
for (int i = 2; i <=c ; ++i) {
for (int j = 0; j <g ; ++j) {
fa[j]*=i;
}
for (int j = 0; j <g ; ++j) {
if(fa[j] > 9){
fa[j + 1]+=(fa[j] / 10);
fa[j]%=10;
}
}
}
int index=0;
for (int i = g-1; i >=0 ; --i) {
if(fa[i] == 0)index=i;
else break;
}
for (int i = index-1; i >=0 ; --i) {
cout << fa[i];
}
}
int power(ll xx, ll nn)
{
ll result = 1;
while (nn > 0) {
if ((nn & 1) == 1) // y is odd
{
result = (result%MOD) * (xx%MOD);
}
xx = (xx%MOD) * (xx%MOD);
nn = nn >> 1; // y=y/2;
}
return (result%MOD);
}
void sieve(int c){ //nlog(log(n))
vector<bool>prime(c+1, false);
prime[0]= prime[1]= true;
for (int i = 2; i*i <c ; ++i) {
if(!prime[i]){
for (int j = i+i; j <=c ; j+=i) {
prime[j]=true;
}
}
}
for (int i = 0; i <= c; ++i) {
if(!prime[i])cout<<i<<endl;
}
}
ll factorization(ll nn) { //at most log(n)
int cnt=0;
ll temp=nn;
vector<ll>factors;
while (nn % 2 == 0) {
cnt++;
factors.push_back(2);
nn /= 2;
}
for (int i = 3; i * i <= nn; i+=2) {
while (nn % i == 0) {
cnt++;
factors.push_back(i);
nn /= i;
}
}
if (nn > 1) {
factors.push_back(nn);
}
map<ll, ll> mp;
for (int i = 0; i < int(factors.size()); ++i) {
mp[factors[i]]++;
}
ll a = 1;
for (auto u: mp) {
a *=((power(u.first,u.second+1)-1)/(u.first-1));
}
a-=temp;
ll sum=abs(temp-a);
return sum;
}
const int dx[] = {1, -1, 0, 0,1,-1} , dy[] = {0, 0, 1, -1,1,-1};
const string dir[]={"D","U","R","L","UR","DR","UL","DL"};
const string dir1[]={"Carrots","Kiwis","Grapes"};
arrRange(aa,-N ,N);
vector<int>adj[N];
bool vis[N];
int child[N];
int n,m,x,y;
void solve(){
cin>>n>>m;
ll sum=0;
for (int i = n; i <=m ; ++i) {
sum+= factorization(i);
}
cout<<sum<<endl;
}
int main() {
MR_Robot
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
// w{
solve();
// }
return 0;
}
Compilation message
savrsen.cpp: In function 'int main()':
savrsen.cpp:135:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
135 | freopen("in.txt", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
savrsen.cpp:136:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
136 | freopen("out.txt", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
107 ms |
131072 KB |
Execution killed with signal 9 |
| 2 |
Runtime error |
105 ms |
131072 KB |
Execution killed with signal 9 |
| 3 |
Runtime error |
107 ms |
131072 KB |
Execution killed with signal 9 |
| 4 |
Runtime error |
113 ms |
131072 KB |
Execution killed with signal 9 |
| 5 |
Runtime error |
106 ms |
131072 KB |
Execution killed with signal 9 |
| 6 |
Runtime error |
109 ms |
131072 KB |
Execution killed with signal 9 |
| 7 |
Runtime error |
110 ms |
131072 KB |
Execution killed with signal 9 |
| 8 |
Runtime error |
125 ms |
131072 KB |
Execution killed with signal 9 |
