#include <bits/stdc++.h>
using namespace std;

int a, b, c, d, e, f;
long long ans;
string str[5];

int getsgn(int v) {
	if (v > 0) {
		return 1;
	} else if (v == 0) {
		return 0;
	} else {
		return -1;
	}
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	for (int i = 0; i < 5; i++) {
		getline(cin, str[i]);
	}

	char I = str[1][4];
	bool sgn = 0;
	int *now = &a;
	for (char x : str[1]) {
		if (x >= '0' && x <= '9') {
			*now = *now * 10 + x - '0';
		} else if (x == '-') {
			sgn = 1;
		} else if (x == ',') {
			now = now == &a ? &b : &c;
		}
	}
	if (c == 0) {
		c = 1;
	} else if (sgn) {
		c = -c;
	}

	sgn = 0;
	now = &d;
	bool ok = 0;
	for (char x : str[2]) {
		if (x == '(') {
			ok = 1;
		}
		if (!ok) {
			continue;
		}
		if (x >= '0' && x <= '9') {
			*now = *now * 10 + x - '0';
		} else if (x == '-') {
			sgn = 1;
		} else if (x == ',') {
			now = now == &d ? &e : &f;
		} else if (x == I) {
			*now = 1e9;
		}
	}
	if (f == 0) {
		f = 1;
	} else if (sgn) {
		f = -f;
	}

	if (c > 0) {
		for (int i = a; i < b; i += c) {
			int l = d == 1e9 ? i : d;
			int r = e == 1e9 ? i : e;
			int v = f == 1e9 ? i : f;
			if (getsgn(r - l) != getsgn(v)) {
				continue;
			}
			int t = (abs(r - l) + abs(v) - 1) / abs(v);
			ans += 1ll * (l + l + 1ll * (t - 1) * v) * t / 2;
		}
	} else {
		for (int i = a; i > b; i += c) {
			int l = d == 1e9 ? i : d;
			int r = e == 1e9 ? i : e;
			int v = f == 1e9 ? i : f;
			if (getsgn(r - l) != getsgn(v)) {
				continue;
			}
			int t = (abs(r - l) + abs(v) - 1) / abs(v);
			ans += 1ll * (l + l + 1ll * (t - 1) * v) * t / 2;
		}
	}
	cout << ans << '\n';

	return 0;
}