Run ID Author Problem Lang Verdict Time Memory Code Length Submit Time
24740 liusiyu 1的个数 C++ Accepted 0 MS 252 KB 326 2023-08-17 09:11:15

Tests(1/1):


#include<iostream> using namespace std; int main() { int n,sum=0; cin>>n; for(int i=1;i<=n;i++){ if(i%10==1){ sum++; } if(i/10%10==1){ sum++; } if(i/100%10==1){ sum++; } if(i/1000%10==1){ sum++; } if(i/1000/10){ sum++; } } cout<<sum; return 0; }


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