Submission #920097

#	Time	Username	Problem	Language	Result	Execution time	Memory
920097		TIN	Relativnost (COCI15_relativnost)	C++17	140 / 140	2498 ms	26448 KiB

relativnost

#include <bits/stdc++.h>

using namespace std;

#define FNAME "test"

const int M = 10007;
const int N = 1e5 + 5;

int n, c, q;
int pos, vala, valb;
int a[N], b[N];

struct Node {
	int chosen[21];

	Node() {
		memset(chosen, 0, sizeof(chosen));
	}

	Node operator + (const Node& oth) {
		Node nNode;
		for (int i = 0; i <= c; i++) {
			for (int j = 0; j <= c; j++) {
				nNode.chosen[min(c, i + j)] = (nNode.chosen[min(c, i + j)] + chosen[i] * oth.chosen[j]) % M;
			}
		}
		return nNode;
	}
} ST[3 * N];

Node merge(const Node& Node1, const Node& Node2) {
	Node nNode;
	for (int i = 0; i <= c; i++) {
		for (int j = 0; j <= c; j++) {
			nNode.chosen[min(c, i + j)] = (nNode.chosen[min(c, i + j)] + Node1.chosen[i] * Node2.chosen[j]) % M;
		}
	}
	return nNode;
}

void Task() {
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cout << fixed << setprecision(9);
	if (fopen(FNAME".inp","r")) {
		freopen(FNAME".inp","r",stdin);
		freopen(FNAME".out","w",stdout);
	}
}

void build(int id, int l, int r) {
	if (l == r) {
		ST[id].chosen[0] = b[l] % M;
		ST[id].chosen[1] = a[r] % M;
		return;
	}
	int m = (l + r) / 2;
	build(id * 2, l, m);
	build(id * 2 + 1, m + 1, r);
	ST[id] = ST[id * 2] + ST[id * 2 + 1];
}

void update(int id, int l, int r, int pos, int vala, int valb) {
	if (pos < l || r < pos) return;
	if (l == r) {
		a[pos] = vala; ST[id].chosen[1] = a[pos] % M;
		b[pos] = valb; ST[id].chosen[0] = b[pos] % M;
		return;
	}
	int m = (l + r) / 2;
	update(id * 2, l, m, pos, vala, valb);
	update(id * 2 + 1, m + 1, r, pos, vala, valb);
	ST[id] = ST[id * 2] + ST[id * 2 + 1];
}

void Solve() {
	//Your Code
	cin >> n >> c;
	for (int i = 1; i <= n; i++) cin >> a[i];
	for (int i = 1; i <= n; i++) cin >> b[i];
	build(1, 1, n);
	cin >> q;
	while (q--) {
		cin >> pos >> vala >> valb;
		update(1, 1, n, pos, vala, valb);
		cout << ST[1].chosen[c] << '\n';
	}
}

signed main() {
	Task();
	Solve();
	cerr << "\nTime run: " << 1000*clock()/CLOCKS_PER_SEC << "ms";
	return 37^37;
}

Compilation message (stderr)

relativnost.cpp: In function 'void Task()':
relativnost.cpp:47:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   freopen(FNAME".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
relativnost.cpp:48:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   freopen(FNAME".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 140 / 140