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I have tried so many test cases, with boundary cases, and all are giving correct output, I am still getting WA though!↵
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Below is my code, any hint?↵
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#include <cstring>↵
#include <iostream>↵
using namespace std;↵
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typedef long long ll;↵
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const int N = 1e5; // limit for array size↵
ll n, h; // array size↵
ll t[2 * N];↵
ll d[N];↵
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void apply(int p, int value, int k) {↵
t[p] += value * k;↵
if (p < n) d[p] += value;↵
}↵
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void build(int p) {↵
int k = 1;↵
while (p > 1) {↵
p >>= 1;↵
k <<= 1;↵
t[p] = t[p<<1] + t[p<<1|1] + k * d[p];↵
}↵
}↵
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void push(int p) {↵
for (int s = h; s > 0; --s) {↵
int i = p >> s;↵
if (d[i] != 0) {↵
apply(i<<1, d[i], s);↵
apply(i<<1|1, d[i], s);↵
d[i] = 0;↵
}↵
}↵
}↵
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void inc(int l, int r, int value) {↵
l += n, r += n;↵
int l0 = l, r0 = r;↵
int k = 1;↵
for (; l <= r; l >>= 1, r >>= 1, k <<= 1) {↵
if (l & 1) apply(l++, value, k);↵
if (r % 2 == 0) apply(r--, value, k);↵
}↵
build(l0);↵
build(r0);↵
}↵
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ll query(int l, int r) {↵
l += n, r += n;↵
push(l);↵
push(r);↵
ll res = 0;↵
for (; l <= r; l >>= 1, r >>= 1) {↵
if (l & 1) res += t[l++];↵
if (r % 2 == 0) res += t[r--];↵
}↵
return res;↵
}↵
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int main() {↵
ios::sync_with_stdio(false);↵
cin.tie(NULL);↵
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ll T, C, p, q, v, o;↵
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cin >> T;↵
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for(int i = 0; i < T; i++) {↵
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cin >> n >> C;↵
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h = sizeof(int) * 8 - __builtin_clz(n);↵
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memset(t, 0, sizeof(t));↵
memset(d, 0, sizeof(d));↵
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for(int j = 0; j < C; j++) {↵
cin >> o >> p >> q;↵
if(o == 0) {↵
cin >> v;↵
inc(p - 1, q - 1, v);↵
} else {↵
cout << query(p - 1, q - 1) << '\n';↵
}↵
}↵
}↵
return 0;↵
}↵
~~~~~↵
