Submission #198073

#	Time	Username	Problem	Language	Result	Execution time	Memory
198073		ZwariowanyMarcin	Trol (COCI19_trol)	C++14	50 / 50	12 ms	396 KiB

trol

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define ss(x) (int) x.size()
#define pb push_back
#define LL long long
#define ld double
#define cat(x) cerr << #x << " = " << x << endl
#define FOR(i, j, n) for(int i = j; i <= n; ++i)
#define boost cin.tie(0), ios_base::sync_with_stdio(0);


using namespace std;

int T;
LL a, b;

int main() {
	scanf ("%d", &T);
	while (T--) {
		LL c = 0;
		scanf ("%lld%lld", &a, &b);
		for (int i = 0; i < 9; ++i) {
			LL l = a;
			while (l % 9 != i) l++;
			LL r = b;
			while (0 <= r && r % 9 != i) r--;
			int x = (i == 0 ? 9 : i);
			if (l <= r)
				c += 1LL * x * ((r - l) / 9 + 1);
		}
		printf ("%lld\n", c);
	}
	
	return 0;
}

Compilation message (stderr)

trol.cpp: In function 'int main()':
trol.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d", &T);
  ~~~~~~^~~~~~~~~~
trol.cpp:23:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%lld%lld", &a, &b);
   ~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 50 / 50