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답안 #962968

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
962968 2024-04-14T10:18:55 Z Unforgettablepl 송금 (JOI19_remittance) C++17
55 / 100
 1000 ms 207744 KB 
#include <bits/stdc++.h>
using namespace std;

const int base = 1000000000;
const int base_digits = 9;
struct bigint {
	vector<int> a;
	int sign;
	/*<arpa>*/
	int size(){
		if(a.empty())return 0;
		int ans=(a.size()-1)*base_digits;
		int ca=a.back();
		while(ca)
			ans++,ca/=10;
		return ans;
	}
	bigint operator ^(const bigint &v){
		bigint ans=1,a=*this,b=v;
		while(!b.isZero()){
			if(b%2)
				ans*=a;
			a*=a,b/=2;
		}
		return ans;
	}
	string to_string(){
		stringstream ss;
		ss << *this;
		string s;
		ss >> s;
		return s;
	}
	int sumof(){
		string s = to_string();
		int ans = 0;
		for(auto c : s)  ans += c - '0';
		return ans;
	}
	/*</arpa>*/
	bigint() :
		sign(1) {
	}

	bigint(long long v) {
		*this = v;
	}

	bigint(const string &s) {
		read(s);
	}

	void operator=(const bigint &v) {
		sign = v.sign;
		a = v.a;
	}

	void operator=(long long v) {
		sign = 1;
		a.clear();
		if (v < 0)
			sign = -1, v = -v;
		for (; v > 0; v = v / base)
			a.push_back(v % base);
	}

	bigint operator+(const bigint &v) const {
		if (sign == v.sign) {
			bigint res = v;

			for (int i = 0, carry = 0; i < (int) max(a.size(), v.a.size()) || carry; ++i) {
				if (i == (int) res.a.size())
					res.a.push_back(0);
				res.a[i] += carry + (i < (int) a.size() ? a[i] : 0);
				carry = res.a[i] >= base;
				if (carry)
					res.a[i] -= base;
			}
			return res;
		}
		return *this - (-v);
	}

	bigint operator-(const bigint &v) const {
		if (sign == v.sign) {
			if (abs() >= v.abs()) {
				bigint res = *this;
				for (int i = 0, carry = 0; i < (int) v.a.size() || carry; ++i) {
					res.a[i] -= carry + (i < (int) v.a.size() ? v.a[i] : 0);
					carry = res.a[i] < 0;
					if (carry)
						res.a[i] += base;
				}
				res.trim();
				return res;
			}
			return -(v - *this);
		}
		return *this + (-v);
	}

	void operator*=(int v) {
		if (v < 0)
			sign = -sign, v = -v;
		for (int i = 0, carry = 0; i < (int) a.size() || carry; ++i) {
			if (i == (int) a.size())
				a.push_back(0);
			long long cur = a[i] * (long long) v + carry;
			carry = (int) (cur / base);
			a[i] = (int) (cur % base);
			//asm("divl %%ecx" : "=a"(carry), "=d"(a[i]) : "A"(cur), "c"(base));
		}
		trim();
	}

	bigint operator*(int v) const {
		bigint res = *this;
		res *= v;
		return res;
	}

	void operator*=(long long v) {
		if (v < 0)
			sign = -sign, v = -v;
		if(v > base){
			*this = *this * (v / base) * base + *this * (v % base);
			return ;
		}
		for (int i = 0, carry = 0; i < (int) a.size() || carry; ++i) {
			if (i == (int) a.size())
				a.push_back(0);
			long long cur = a[i] * (long long) v + carry;
			carry = (int) (cur / base);
			a[i] = (int) (cur % base);
			//asm("divl %%ecx" : "=a"(carry), "=d"(a[i]) : "A"(cur), "c"(base));
		}
		trim();
	}

	bigint operator*(long long v) const {
		bigint res = *this;
		res *= v;
		return res;
	}

	friend pair<bigint, bigint> divmod(const bigint &a1, const bigint &b1) {
		int norm = base / (b1.a.back() + 1);
		bigint a = a1.abs() * norm;
		bigint b = b1.abs() * norm;
		bigint q, r;
		q.a.resize(a.a.size());

		for (int i = a.a.size() - 1; i >= 0; i--) {
			r *= base;
			r += a.a[i];
			int s1 = r.a.size() <= b.a.size() ? 0 : r.a[b.a.size()];
			int s2 = r.a.size() <= b.a.size() - 1 ? 0 : r.a[b.a.size() - 1];
			int d = ((long long) base * s1 + s2) / b.a.back();
			r -= b * d;
			while (r < 0)
				r += b, --d;
			q.a[i] = d;
		}

		q.sign = a1.sign * b1.sign;
		r.sign = a1.sign;
		q.trim();
		r.trim();
		return make_pair(q, r / norm);
	}

	bigint operator/(const bigint &v) const {
		return divmod(*this, v).first;
	}

	bigint operator%(const bigint &v) const {
		return divmod(*this, v).second;
	}

	void operator/=(int v) {
		if (v < 0)
			sign = -sign, v = -v;
		for (int i = (int) a.size() - 1, rem = 0; i >= 0; --i) {
			long long cur = a[i] + rem * (long long) base;
			a[i] = (int) (cur / v);
			rem = (int) (cur % v);
		}
		trim();
	}

	bigint operator/(int v) const {
		bigint res = *this;
		res /= v;
		return res;
	}

	int operator%(int v) const {
		if (v < 0)
			v = -v;
		int m = 0;
		for (int i = a.size() - 1; i >= 0; --i)
			m = (a[i] + m * (long long) base) % v;
		return m * sign;
	}

	void operator+=(const bigint &v) {
		*this = *this + v;
	}
	void operator-=(const bigint &v) {
		*this = *this - v;
	}
	void operator*=(const bigint &v) {
		*this = *this * v;
	}
	void operator/=(const bigint &v) {
		*this = *this / v;
	}

	bool operator<(const bigint &v) const {
		if (sign != v.sign)
			return sign < v.sign;
		if (a.size() != v.a.size())
			return a.size() * sign < v.a.size() * v.sign;
		for (int i = a.size() - 1; i >= 0; i--)
			if (a[i] != v.a[i])
				return a[i] * sign < v.a[i] * sign;
		return false;
	}

	bool operator>(const bigint &v) const {
		return v < *this;
	}
	bool operator<=(const bigint &v) const {
		return !(v < *this);
	}
	bool operator>=(const bigint &v) const {
		return !(*this < v);
	}
	bool operator==(const bigint &v) const {
		return !(*this < v) && !(v < *this);
	}
	bool operator!=(const bigint &v) const {
		return *this < v || v < *this;
	}

	void trim() {
		while (!a.empty() && !a.back())
			a.pop_back();
		if (a.empty())
			sign = 1;
	}

	bool isZero() const {
		return a.empty() || (a.size() == 1 && !a[0]);
	}

	bigint operator-() const {
		bigint res = *this;
		res.sign = -sign;
		return res;
	}

	bigint abs() const {
		bigint res = *this;
		res.sign *= res.sign;
		return res;
	}

	long long longValue() const {
		long long res = 0;
		for (int i = a.size() - 1; i >= 0; i--)
			res = res * base + a[i];
		return res * sign;
	}

	friend bigint gcd(const bigint &a, const bigint &b) {
		return b.isZero() ? a : gcd(b, a % b);
	}
	friend bigint lcm(const bigint &a, const bigint &b) {
		return a / gcd(a, b) * b;
	}

	void read(const string &s) {
		sign = 1;
		a.clear();
		int pos = 0;
		while (pos < (int) s.size() && (s[pos] == '-' || s[pos] == '+')) {
			if (s[pos] == '-')
				sign = -sign;
			++pos;
		}
		for (int i = s.size() - 1; i >= pos; i -= base_digits) {
			int x = 0;
			for (int j = max(pos, i - base_digits + 1); j <= i; j++)
				x = x * 10 + s[j] - '0';
			a.push_back(x);
		}
		trim();
	}

	friend istream& operator>>(istream &stream, bigint &v) {
		string s;
		stream >> s;
		v.read(s);
		return stream;
	}

	friend ostream& operator<<(ostream &stream, const bigint &v) {
		if (v.sign == -1)
			stream << '-';
		stream << (v.a.empty() ? 0 : v.a.back());
		for (int i = (int) v.a.size() - 2; i >= 0; --i)
			stream << setw(base_digits) << setfill('0') << v.a[i];
		return stream;
	}

	static vector<int> convert_base(const vector<int> &a, int old_digits, int new_digits) {
		vector<long long> p(max(old_digits, new_digits) + 1);
		p[0] = 1;
		for (int i = 1; i < (int) p.size(); i++)
			p[i] = p[i - 1] * 10;
		vector<int> res;
		long long cur = 0;
		int cur_digits = 0;
		for (int i = 0; i < (int) a.size(); i++) {
			cur += a[i] * p[cur_digits];
			cur_digits += old_digits;
			while (cur_digits >= new_digits) {
				res.push_back(int(cur % p[new_digits]));
				cur /= p[new_digits];
				cur_digits -= new_digits;
			}
		}
		res.push_back((int) cur);
		while (!res.empty() && !res.back())
			res.pop_back();
		return res;
	}

	typedef vector<long long> vll;

	static vll karatsubaMultiply(const vll &a, const vll &b) {
		int n = a.size();
		vll res(n + n);
		if (n <= 32) {
			for (int i = 0; i < n; i++)
				for (int j = 0; j < n; j++)
					res[i + j] += a[i] * b[j];
			return res;
		}

		int k = n >> 1;
		vll a1(a.begin(), a.begin() + k);
		vll a2(a.begin() + k, a.end());
		vll b1(b.begin(), b.begin() + k);
		vll b2(b.begin() + k, b.end());

		vll a1b1 = karatsubaMultiply(a1, b1);
		vll a2b2 = karatsubaMultiply(a2, b2);

		for (int i = 0; i < k; i++)
			a2[i] += a1[i];
		for (int i = 0; i < k; i++)
			b2[i] += b1[i];

		vll r = karatsubaMultiply(a2, b2);
		for (int i = 0; i < (int) a1b1.size(); i++)
			r[i] -= a1b1[i];
		for (int i = 0; i < (int) a2b2.size(); i++)
			r[i] -= a2b2[i];

		for (int i = 0; i < (int) r.size(); i++)
			res[i + k] += r[i];
		for (int i = 0; i < (int) a1b1.size(); i++)
			res[i] += a1b1[i];
		for (int i = 0; i < (int) a2b2.size(); i++)
			res[i + n] += a2b2[i];
		return res;
	}

	bigint operator*(const bigint &v) const {
		vector<int> a6 = convert_base(this->a, base_digits, 6);
		vector<int> b6 = convert_base(v.a, base_digits, 6);
		vll a(a6.begin(), a6.end());
		vll b(b6.begin(), b6.end());
		while (a.size() < b.size())
			a.push_back(0);
		while (b.size() < a.size())
			b.push_back(0);
		while (a.size() & (a.size() - 1))
			a.push_back(0), b.push_back(0);
		vll c = karatsubaMultiply(a, b);
		bigint res;
		res.sign = sign * v.sign;
		for (int i = 0, carry = 0; i < (int) c.size(); i++) {
			long long cur = c[i] + carry;
			res.a.push_back((int) (cur % 1000000));
			carry = (int) (cur / 1000000);
		}
		res.a = convert_base(res.a, 6, base_digits);
		res.trim();
		return res;
	}
};

#define int bigint

const int modulo = 1e9+7;

int A[1000001];
int B[1000001];
int curr[1000001];
int arr[1000001];

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int32_t n;
    cin >> n;
    for(int32_t i=0;i<n;i++)cin>>A[i]>>B[i];
    int start(0);
    int power(1);
    for(int32_t i=1;i<n;i++){
        start+=power*(A[i]-B[i]);
        power*=2ll;
    }
    start+=power*(A[0]-B[0]);
    power*=2ll;
    power-=1;
    start/=power;
    arr[0]=start;
    bool works = true;
    if(start<0)works=false;
    for(int32_t x=1;x<n;x++){
        arr[x]=arr[x-1]+A[x]-B[x];
        if(arr[x]<bigint(0))works=false;
        if(arr[x]%bigint(2)==bigint(1))works=false;
        arr[x]/=2;
    }
    int backup = arr[n-1]+A[0]-B[0];
    if(backup%bigint(2)==bigint(1))works=false;
    if(arr[0]!=backup/2)works=false;
    if(!works)goto shit;
    for(int32_t x=0;x<n;x++)curr[x]=A[x];
    for(int32_t rounds=1;rounds<40;rounds++){
        for(int32_t x=0;x<n;x++){
            int uses = min(arr[x],curr[x]/2);
            curr[x]-=bigint(2)*uses;
            arr[x]-=uses;
            curr[(x+1)%n]+=uses;
        }
    }
    for(int32_t x=0;x<n;x++)if(curr[x]!=B[x])works=false;
    if(works){
        cout << "Yes\n";
        return 0;
    }
    shit:
    cout << "No\n";
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 125524 KB Output is correct
2 Correct 32 ms 125528 KB Output is correct
3 Correct 28 ms 125648 KB Output is correct
4 Correct 29 ms 125592 KB Output is correct
5 Correct 33 ms 125676 KB Output is correct
6 Correct 30 ms 125532 KB Output is correct
7 Correct 28 ms 125652 KB Output is correct
8 Correct 28 ms 125528 KB Output is correct
9 Correct 27 ms 125528 KB Output is correct
10 Correct 30 ms 125524 KB Output is correct
11 Correct 30 ms 125848 KB Output is correct
12 Correct 29 ms 125528 KB Output is correct
13 Correct 29 ms 125696 KB Output is correct
14 Correct 28 ms 125532 KB Output is correct
15 Correct 32 ms 125532 KB Output is correct
16 Correct 28 ms 125612 KB Output is correct
17 Correct 29 ms 125528 KB Output is correct
18 Correct 27 ms 125532 KB Output is correct
19 Correct 31 ms 125788 KB Output is correct
20 Correct 31 ms 125632 KB Output is correct
21 Correct 32 ms 125616 KB Output is correct
22 Correct 28 ms 125688 KB Output is correct
23 Correct 28 ms 125604 KB Output is correct
24 Correct 28 ms 125532 KB Output is correct
25 Correct 29 ms 125532 KB Output is correct
26 Correct 28 ms 125532 KB Output is correct
27 Correct 30 ms 125524 KB Output is correct
28 Correct 28 ms 125668 KB Output is correct
29 Correct 29 ms 125684 KB Output is correct
30 Correct 28 ms 125776 KB Output is correct
31 Correct 28 ms 125532 KB Output is correct
32 Correct 28 ms 125632 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 125524 KB Output is correct
2 Correct 32 ms 125528 KB Output is correct
3 Correct 28 ms 125648 KB Output is correct
4 Correct 29 ms 125592 KB Output is correct
5 Correct 33 ms 125676 KB Output is correct
6 Correct 30 ms 125532 KB Output is correct
7 Correct 28 ms 125652 KB Output is correct
8 Correct 28 ms 125528 KB Output is correct
9 Correct 27 ms 125528 KB Output is correct
10 Correct 30 ms 125524 KB Output is correct
11 Correct 30 ms 125848 KB Output is correct
12 Correct 29 ms 125528 KB Output is correct
13 Correct 29 ms 125696 KB Output is correct
14 Correct 28 ms 125532 KB Output is correct
15 Correct 32 ms 125532 KB Output is correct
16 Correct 28 ms 125612 KB Output is correct
17 Correct 29 ms 125528 KB Output is correct
18 Correct 27 ms 125532 KB Output is correct
19 Correct 31 ms 125788 KB Output is correct
20 Correct 31 ms 125632 KB Output is correct
21 Correct 32 ms 125616 KB Output is correct
22 Correct 28 ms 125688 KB Output is correct
23 Correct 28 ms 125604 KB Output is correct
24 Correct 28 ms 125532 KB Output is correct
25 Correct 29 ms 125532 KB Output is correct
26 Correct 28 ms 125532 KB Output is correct
27 Correct 30 ms 125524 KB Output is correct
28 Correct 28 ms 125668 KB Output is correct
29 Correct 29 ms 125684 KB Output is correct
30 Correct 28 ms 125776 KB Output is correct
31 Correct 28 ms 125532 KB Output is correct
32 Correct 28 ms 125632 KB Output is correct
33 Correct 28 ms 125528 KB Output is correct
34 Correct 30 ms 125532 KB Output is correct
35 Correct 29 ms 125528 KB Output is correct
36 Correct 28 ms 125948 KB Output is correct
37 Correct 29 ms 125532 KB Output is correct
38 Correct 29 ms 125640 KB Output is correct
39 Correct 27 ms 125528 KB Output is correct
40 Correct 31 ms 125528 KB Output is correct
41 Correct 28 ms 125628 KB Output is correct
42 Correct 31 ms 125644 KB Output is correct
43 Correct 29 ms 125532 KB Output is correct
44 Correct 32 ms 125632 KB Output is correct
45 Correct 28 ms 125528 KB Output is correct
46 Correct 29 ms 125532 KB Output is correct
47 Correct 28 ms 125676 KB Output is correct
48 Correct 29 ms 125664 KB Output is correct
49 Correct 29 ms 125640 KB Output is correct
50 Correct 30 ms 125668 KB Output is correct
51 Correct 32 ms 125700 KB Output is correct
52 Correct 28 ms 125528 KB Output is correct
53 Correct 32 ms 125532 KB Output is correct
54 Correct 30 ms 125648 KB Output is correct
55 Correct 28 ms 125532 KB Output is correct
56 Correct 31 ms 125680 KB Output is correct
57 Correct 28 ms 125528 KB Output is correct
58 Correct 31 ms 125780 KB Output is correct
59 Correct 29 ms 125532 KB Output is correct
60 Correct 28 ms 125528 KB Output is correct
61 Correct 28 ms 125532 KB Output is correct
62 Correct 28 ms 125532 KB Output is correct

Subtask #3
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 125524 KB Output is correct
2 Correct 32 ms 125528 KB Output is correct
3 Correct 28 ms 125648 KB Output is correct
4 Correct 29 ms 125592 KB Output is correct
5 Correct 33 ms 125676 KB Output is correct
6 Correct 30 ms 125532 KB Output is correct
7 Correct 28 ms 125652 KB Output is correct
8 Correct 28 ms 125528 KB Output is correct
9 Correct 27 ms 125528 KB Output is correct
10 Correct 30 ms 125524 KB Output is correct
11 Correct 30 ms 125848 KB Output is correct
12 Correct 29 ms 125528 KB Output is correct
13 Correct 29 ms 125696 KB Output is correct
14 Correct 28 ms 125532 KB Output is correct
15 Correct 32 ms 125532 KB Output is correct
16 Correct 28 ms 125612 KB Output is correct
17 Correct 29 ms 125528 KB Output is correct
18 Correct 27 ms 125532 KB Output is correct
19 Correct 31 ms 125788 KB Output is correct
20 Correct 31 ms 125632 KB Output is correct
21 Correct 32 ms 125616 KB Output is correct
22 Correct 28 ms 125688 KB Output is correct
23 Correct 28 ms 125604 KB Output is correct
24 Correct 28 ms 125532 KB Output is correct
25 Correct 29 ms 125532 KB Output is correct
26 Correct 28 ms 125532 KB Output is correct
27 Correct 30 ms 125524 KB Output is correct
28 Correct 28 ms 125668 KB Output is correct
29 Correct 29 ms 125684 KB Output is correct
30 Correct 28 ms 125776 KB Output is correct
31 Correct 28 ms 125532 KB Output is correct
32 Correct 28 ms 125632 KB Output is correct
33 Correct 28 ms 125528 KB Output is correct
34 Correct 30 ms 125532 KB Output is correct
35 Correct 29 ms 125528 KB Output is correct
36 Correct 28 ms 125948 KB Output is correct
37 Correct 29 ms 125532 KB Output is correct
38 Correct 29 ms 125640 KB Output is correct
39 Correct 27 ms 125528 KB Output is correct
40 Correct 31 ms 125528 KB Output is correct
41 Correct 28 ms 125628 KB Output is correct
42 Correct 31 ms 125644 KB Output is correct
43 Correct 29 ms 125532 KB Output is correct
44 Correct 32 ms 125632 KB Output is correct
45 Correct 28 ms 125528 KB Output is correct
46 Correct 29 ms 125532 KB Output is correct
47 Correct 28 ms 125676 KB Output is correct
48 Correct 29 ms 125664 KB Output is correct
49 Correct 29 ms 125640 KB Output is correct
50 Correct 30 ms 125668 KB Output is correct
51 Correct 32 ms 125700 KB Output is correct
52 Correct 28 ms 125528 KB Output is correct
53 Correct 32 ms 125532 KB Output is correct
54 Correct 30 ms 125648 KB Output is correct
55 Correct 28 ms 125532 KB Output is correct
56 Correct 31 ms 125680 KB Output is correct
57 Correct 28 ms 125528 KB Output is correct
58 Correct 31 ms 125780 KB Output is correct
59 Correct 29 ms 125532 KB Output is correct
60 Correct 28 ms 125528 KB Output is correct
61 Correct 28 ms 125532 KB Output is correct
62 Correct 28 ms 125532 KB Output is correct
63 Execution timed out 1010 ms 207744 KB Time limit exceeded
64 Halted 0 ms 0 KB -