Submission #1159606


Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)




//-----------------------------------------------------------------
#define rrep(i,a,b) for(int i=a;i>=b;i--)
vector<int> mul9(vector<int> s) {
	int n = s.size(), carry = 0;
	vector<int> ret;
	rrep(i, n - 1, 0) {
		int c = s[i] * 9 + carry;
		carry = c / 10;
		c %= 10;
		ret.push_back(c);
	}
	while (0 < carry) {
		ret.push_back(carry % 10);
		carry /= 10;
	}
	reverse(ret.begin(), ret.end());
	return ret;
}
vector<int> add(vector<int> s, int x) {
	int n = s.size(), carry = x;
	vector<int> ret;
	rrep(i, n - 1, 0) {
		int c = s[i] + carry;
		carry = c / 10;
		c %= 10;
		ret.push_back(c);
	}
	while (0 < carry) {
		ret.push_back(carry % 10);
		carry /= 10;
	}
	reverse(ret.begin(), ret.end());
	return ret;
}
//-----------------------------------------------------------------
vector<int> N;
bool chk(int k) {
	auto n = add(mul9(N), k);
	int cnt = 0;
	for (int c : n) cnt += c;

	return cnt <= k;
}
//-----------------------------------------------------------------
int main() {
	string s; cin >> s;
	for (char c : s) N.push_back(c - '0');

	int lo = 0, hi = 4501010;
	while (lo + 1 != hi) {
		int mi = (lo + hi) / 2;
		if (chk(mi)) hi = mi;
		else lo = mi;
	}
	int ans = hi / 9;
	if (hi % 9) ans++;
	cout << ans << endl;
}

Submission Info

Submission Time
Task E - Increasing Numbers
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 1300
Code Size 1380 Byte
Status AC
Exec Time 159 ms
Memory 10956 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1300 / 1300
Status
AC × 4
AC × 40
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt, sample4.txt
All sample1.txt, sample2.txt, sample3.txt, sample4.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in4.txt, in5.txt, in500000.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt, sample4.txt
Case Name Status Exec Time Memory
in1.txt AC 4 ms 564 KB
in10.txt AC 151 ms 10628 KB
in11.txt AC 152 ms 10660 KB
in12.txt AC 151 ms 10660 KB
in13.txt AC 152 ms 10660 KB
in14.txt AC 151 ms 10660 KB
in15.txt AC 151 ms 10660 KB
in16.txt AC 136 ms 10860 KB
in17.txt AC 144 ms 10208 KB
in18.txt AC 152 ms 10660 KB
in19.txt AC 155 ms 10472 KB
in2.txt AC 151 ms 10660 KB
in20.txt AC 151 ms 10660 KB
in21.txt AC 152 ms 10660 KB
in22.txt AC 154 ms 10660 KB
in23.txt AC 159 ms 10660 KB
in24.txt AC 159 ms 10660 KB
in25.txt AC 151 ms 10640 KB
in26.txt AC 147 ms 10380 KB
in27.txt AC 103 ms 9592 KB
in28.txt AC 158 ms 10624 KB
in29.txt AC 153 ms 10660 KB
in3.txt AC 152 ms 10628 KB
in30.txt AC 159 ms 10648 KB
in31.txt AC 152 ms 10660 KB
in4.txt AC 159 ms 10660 KB
in5.txt AC 141 ms 10936 KB
in500000.txt AC 137 ms 10956 KB
in6.txt AC 151 ms 10660 KB
in7.txt AC 130 ms 8996 KB
in8.txt AC 150 ms 10532 KB
in9.txt AC 152 ms 10660 KB
sample1.txt AC 1 ms 256 KB
sample2.txt AC 1 ms 256 KB
sample3.txt AC 1 ms 256 KB
sample4.txt AC 1 ms 256 KB