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63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPL(t, x) bool operator<(CRP(t, x)) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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#ifndef _DEBUG
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#define _DEBUG 0
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#endif // !_DEBUG
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#define IFD if (_DEBUG)
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typedef long long ll, i64;
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const int N = 1e5 + 50;
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ll A[N], B[N];
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inline ll lowbit(ll x) { return x & -x; }
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template <ll *arr>
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void update(ll p, ll v)
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{
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for (; p < N; p += lowbit(p))
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arr[p] += v;
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}
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template <ll *arr>
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ll query(ll p)
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{
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ll ans = 0;
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for (; p; p -= lowbit(p))
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ans += arr[p];
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return ans;
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}
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int main()
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{
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int n, m;
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scanf("%d%d", &n, &m);
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for (int i = 1; i <= n; i++)
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{
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begin(A);
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ll tmp;
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scanf("%lld", &tmp);
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update<A>(i, tmp);
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update<B>(i, tmp * (N - i + 1));
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}
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for (int i = 1; i <= m; i++)
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{
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ll op, x, y;
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scanf("%lld%lld%lld", &op, &x, &y);
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if (op == 1)
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{
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ll ans1 = query<B>(y) - query<B>(x - 1);
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ll ans2 = query<A>(y) - query<A>(x - 1);
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printf("%lld\n", ans1 - ans2 * (N - y));
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}
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else
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{
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ll dif = query<A>(x) - query<A>(x - 1);
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update<A>(x, y - dif);
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update<B>(x, (y - dif) * (N - x + 1));
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}
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}
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return 0;
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} |