#include <bits/stdc++.h>
#define l(x) (x << 1) + 1
#define r(x) (x << 1) + 2
using namespace std;
typedef long long ll;
const ll N = 2e5 + 1;
ll n, q, current, arr[N], dif[N], val[N];
void set_value(ll i, ll x) {
current -= val[i]; val[i] = x;
current += val[i];
}
void update(ll i, ll x) {
dif[i] += x;
if (i == 1) {
set_value(i, abs(dif[i]));
return;
}
if (1ll * dif[i - 1] * dif[i] >= 0) {
set_value(i - 1, abs(dif[i - 1]));
set_value(i, abs(dif[i]));
} else if (abs(dif[i - 1]) > abs(dif[i])) {
set_value(i - 1, abs(dif[i - 1]));
set_value(i, 0);
} else {
set_value(i - 1, 0);
set_value(i, abs(dif[i]));
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin >> n >> q;
for (ll i = 1; i <= n; ++i) {
cin >> arr[i];
}
for (ll i = 1; i < n; ++i) {
dif[i] = arr[i + 1] - arr[i];
}
for (ll i = 1; i < n; ++i) {
update(i, 0);
}
for (ll i = 0; i < q; ++i) {
ll l, r, x;
cin >> l >> r >> x;
if (l > 1) {
update(l - 1, x);
}
if (r < n) {
update(r, -x);
}
cout << current << "\n";
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
4444 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
4444 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
4444 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |