This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cstring>
#warning That's the baby, that's not my baby
#define int long long
typedef long long ll;
const int mod = 1e9 + 7;
const int NMAX = 1000;
const int VMAX = 128;
struct Update {
int l, r, x;
};
int cnt[VMAX][VMAX];
ll newCnt[VMAX][VMAX];
ll ways[NMAX][NMAX];
/// cnt[x][y] =def= pt cate subset uri am a[i] = x, a[j] = y?
#define debug(x) #x << " = " << x
bool matters[NMAX];
signed main() {
std::ios_base::sync_with_stdio(false);
std::cin.tie(0);
int n;
std::cin >> n;
std::vector<int> a(n);
for (int i = 0; i < n; i++) {
std::cin >> a[i];
}
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++) {
ways[i][j] = (i + 1) * (n - j);
}
}
int q;
std::cin >> q;
std::vector<Update> Q(q);
for (auto &[l, r, v] : Q) {
std::cin >> l >> r >> v;
--l, --r;
matters[l] = true;
matters[r] = true;
}
ll answer = 0;
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++) {
if (i != j && !matters[j] && !matters[j - 1]) {
for (int x = 0; x < VMAX; x++) {
for (int y = 0; y < VMAX; y++) {
newCnt[x][y ^ a[j - 1] ^ a[j]] += cnt[x][y];
}
}
for (int x = 0; x < VMAX; x++) {
for (int y = 0; y < VMAX; y++) {
cnt[x][y] = newCnt[x][y];
newCnt[x][y] = 0;
}
}
} else {
memset(cnt, 0, sizeof(cnt));
cnt[a[i]][a[j]] = 1;
for (auto &[l, r, v] : Q) {
for (int x = 0; x < VMAX; x++) {
for (int y = 0; y < VMAX; y++) {
int newX = x;
int newY = y;
if (l <= i && i <= r) {
newX ^= v;
}
if (l <= j && j <= r) {
newY ^= v;
}
newCnt[x][y] += cnt[x][y];
newCnt[newX][newY] += cnt[x][y];
}
}
for (int x = 0; x < VMAX; x++) {
for (int y = 0; y < VMAX; y++) {
cnt[x][y] = newCnt[x][y] % mod;
newCnt[x][y] = 0;
}
}
}
}
for (int x = 0; x < VMAX; x++) {
for (int y = 0; y < VMAX; y++) {
if (i == j) {
if (x == y) {
answer += (ll) cnt[x][x] * x % mod * x % mod * ways[i][j] % mod;
}
} else {
answer += (ll) 2 * cnt[x][y] * x % mod * y % mod * ways[i][j] % mod;
}
}
}
}
}
std::cout << answer % mod;
return 0;
}
Compilation message (stderr)
xorsum.cpp:6:2: warning: #warning That's the baby, that's not my baby [-Wcpp]
6 | #warning That's the baby, that's not my baby
| ^~~~~~~
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