Submission #919733

#	Time	Username	Problem	Language	Result	Execution time	Memory
919733		TIN	Relativnost (COCI15_relativnost)	C++17	0 / 140	4042 ms	35856 KiB

relativnost

#include <bits/stdc++.h>

using namespace std;

#define FNAME "test"

typedef long long ll;

const ll M = 10007;
const int N = 1e5 + 5;
const int C = 21;

int n, c, q;
ll a[N], b[N];

struct Node {
	ll chosen[C];

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

	Node(ll a, ll b) {
		memset(chosen, 0, sizeof(chosen));
		chosen[0] = b;
		chosen[1] = a;
	}

	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[2 * N];

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 update(int pos, const Node& value) {
	for (ST[pos += n] = value; pos >>= 1;) ST[pos] = ST[pos << 1] + ST[pos << 1 | 1];
}

ll query(int l, int r) {
	Node res = ST[l + n];
	for (int i = l + 1; i <= r; i++) res = res + ST[i + n];
	return res.chosen[c];
}

void Solve() {
	//Your Code
	cin >> n >> c;
	for (int i = 0; i < n; i++) cin >> a[i] >> b[i], update(i, Node(a[i], b[i]));
	cin >> q;
	while (q--) {
		int pos;
		ll vala, valb;
		cin >> pos >> vala >> valb;
		pos--;
		a[pos] = vala, b[pos] = valb;
		update(pos, Node(vala, valb));
		cout << query(0, n - 1) << '\n';
	}
}

int 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:45:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |   freopen(FNAME".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
relativnost.cpp:46:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   freopen(FNAME".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 140