제출 #292371

#제출 시각아이디문제언어결과실행 시간메모리
292371MilosMilutinovicTrol (COCI19_trol)C++14
50 / 50
1 ms288 KiB
#include <bits/stdc++.h> using namespace std; long long f(long long n){ if(n<10)return n; int sum=0; while(n>0)sum+=n%10,n/=10; return f(sum); } int main(){ int t; scanf("%i",&t); while(t--){ long long L,R; scanf("%lld %lld",&L,&R); if(R-L<=10){ long long ans=0; for(long long i=L;i<=R;i++)ans+=f(i); printf("%lld\n",ans); continue; } long long ans=0; while(f(L)!=1)ans+=f(L),L++; while(f(R)!=9)ans+=f(R),R--; ans+=(R-L+1)/9*45; printf("%lld\n",ans); } return 0; } //1+2+3+4+5+6+7+8+9

컴파일 시 표준 에러 (stderr) 메시지

trol.cpp: In function 'int main()':
trol.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |     scanf("%i",&t);
      |     ~~~~~^~~~~~~~~
trol.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |         scanf("%lld %lld",&L,&R);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
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