제출 #976287

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
976287		vjudge1	Trol (COCI19_trol)	C++17	10 / 50	3 ms	2140 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int maxn=1e5;
int arr[maxn];
void buat1(int &n){
	int sum=0;
	while(n!=0){
	sum= sum+ (n%10);
	n/=10;
}
n=sum;

}
void pre_compute(){
	for(int i=0; i<=maxn; i++){	
	int keepi=i;
	while(keepi - 10 >= 0){
	buat1(keepi);
	}arr[i] = keepi;
}
	
}
signed main(){
memset(arr,0,sizeof(arr));
pre_compute();

	int q;
	cin >> q;
	while(q--){
		int l,r;
		cin >> l>> r;
		int sum=0;
		for(int i=l; i<=r ;i++){
			sum+=arr[i];
		}
		cout << sum<<"\n";
	}






}

컴파일 시 표준 에러 (stderr) 메시지

trol.cpp: In function 'void pre_compute()':
trol.cpp:20:10: warning: iteration 100000 invokes undefined behavior [-Waggressive-loop-optimizations]
   20 |  }arr[i] = keepi;
      |   ~~~~~~~^~~~~~~
trol.cpp:16:16: note: within this loop
   16 |  for(int i=0; i<=maxn; i++){
      |               ~^~~~~~

• Subtask 1: 10 / 50