Run ID | Author | Problem | Lang | Verdict | Time | Memory | Code Length | Submit Time |
---|---|---|---|---|---|---|---|---|
41757 | Xiyou | 1的个数 | C++ | Accepted | 0 MS | 236 KB | 248 | 2024-02-23 10:17:40 |
#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; int cnt=1; for(int i=10;i<=n;i++){ int m=i; while(m){ if(m%10==1){ cnt++; } m/=10; } } cout<<cnt; return 0; }