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Submission #897284

# Submission time Handle Problem Language Result Execution time Memory
897284 2024-01-02T21:00:35 Z NK_ Remittance (JOI19_remittance) C++17
0 / 100
 1 ms 348 KB 
// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
 
using namespace std;
 
#define nl '\n'
 
using ll = long long;
template<class T> using V = vector<T>;
using vi = V<int>;
using vl = V<ll>;
 
const int K = 3;
array<int, K> MOD = {int(1e9) + 7, int(1e9) + 9, 1009};
array<ll, K> EMP = {0, 0, 0};
 
 
int main() {
	cin.tie(0)->sync_with_stdio(0);
	
	int N; cin >> N;
	vl A(N); for(int i = 0; i < N; i++) {
		ll x; cin >> x; A[i] = x;
		cin >> x; A[i] -= x;
	}
 
	auto POW = [&](ll a, ll p, int m) {
		ll ans = 1; 
		for(; p; p /= 2, a = (a * a) % m) if (p % 2) ans = (ans * a) % m;
		return ans;
	};
 
	auto ADD = [&](ll &a, ll b, int m) { return (a + b) % m; };
	auto SUB = [&](ll &a, ll b, int m) { return (a - b + m) % m; };
	auto MUL = [&](ll &a, ll b, int m) { return (a * b) % m; };
 
	array<ll, K> cur = {0, 0, 0};
	for(int i = N - 1; i >= 0; i--) {
		for(int k = 0; k < K; k++) cur[k] = ADD(cur[k], MUL(A[i], POW(2, N - 1 - i, MOD[k]), MOD[k]), MOD[k]);
	} 
 
	bool ans = (cur == EMP);
	for(int i = 0; i < N; i++) {
		for(int k = 0; k < K; k++) {
			cur[k] = SUB(cur[k], MUL(A[i], POW(2, N - 1, MOD[k]), MOD[k]), MOD[k]);
			cur[k] = MUL(cur[k], 2, MOD[k]);
			cur[k] = ADD(cur[k], A[i], MOD[k]);
        }
     	ans |= (cur == EMP);
	}
 
	cout << (ans ? "Yes" : "No") << nl;
 
	exit(0-0);
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -