verify/yosupo-static_range_sum.test.cpp

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Last update: 2025-05-09 08:11:48+00:00
Problem: https://judge.yosupo.jp/problem/static_range_sum

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Code

#define PROBLEM "https://judge.yosupo.jp/problem/static_range_sum"
#include "template"

#include "generalsegtree"


int main() { IO();
    int T=1;
    // cin >> T;

    while (T--) solve();
}

void solve() {
    int n, q; cin >> n >> q;
    vll a(n); cin >> a;
    rangesum_ll seg(a);
    while (q--) {
        int l, r; cin >> l >> r;
        cout << seg.prod(l, r) << nl;
    }
}

#line 1 "verify/yosupo-static_range_sum.test.cpp"
#define PROBLEM "https://judge.yosupo.jp/problem/static_range_sum"
#line 2 "util/template.hpp"
#ifdef poe
#define debug(x) cerr<<#x<<": "<<x<<endl
#else
#define debug(x)
// #pragma GCC target("arch=skylake-avx512")
// #pragma GCC target("avx2")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
#endif
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
using pi=pair<int,int>;
using pll=pair<ll,ll>;
using str=string;
template<class T>using vec=vector<T>;
using vi=vec<int>;using vvi=vec<vi>;using vvvi=vec<vvi>;using vvvvi=vec<vvvi>;using vvvvvi=vec<vvvvi>;
using vll=vec<ll>;using vvll=vec<vll>;using vvvll=vec<vvll>;using vvvvll=vec<vvvll>;using vvvvvll=vec<vvvvll>;
using vpi=vec<pi>;using vvpi=vec<vpi>;using vvvpi=vec<vvpi>;using vvvvpi=vec<vvvpi>;using vvvvvpi=vec<vvvvpi>;
using vpll=vec<pll>;using vvpll=vec<vpll>;using vvvpll=vec<vvpll>;using vvvvpll=vec<vvvpll>;using vvvvvpll=vec<vvvvpll>;
template<class T>using pq=priority_queue<T,vector<T>>;
template<class T>using pqg=priority_queue<T,vector<T>,greater<T>>;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define per(i,n) for(int i=(int)(n)-1;0<=i;i--)
#define per1(i,n) for(int i=(int)(n);0<i;i--)
#define range(i,x) for(auto&i:x)
#define range2(i,j,x) for(auto&[i,j]:x)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define Sort(x) sort((x).begin(),(x).end())
#define troS(x) sort((x).rbegin(),(x).rend())
#define Reverse(x) reverse((x).begin(),(x).end())
#define uniq(x) sort((x).begin(),(x).end());(x).erase(unique((x).begin(),(x).end()),(x).end())
#define nextp(x) next_permutation((x).begin(),(x).end())
#define nextc(x,k) next_combination((x).begin(),(x).end(),k)
#define bit(x,i) (((x)>>(i))&1)
#define pf push_front
#define pb push_back
#define df pop_front
#define db pop_back
#define fi first
#define se second
#define elif else if
#define Yes cout<<"Yes"<<'\n'
#define No cout<<"No"<<'\n'
#define YN(x) cout<<((x)?"Yes":"No")<<'\n'
#define O(x) cout<<(x)<<'\n'
#define ismid(a,b,c) ((a)<=(b)&&(b)<(c))
template<class S,class T>bool chmin(S&a,T b){if(a>b){a=b;return true;}return false;}
template<class S,class T>bool chmax(S&a,T b){if(a<b){a=b;return true;}return false;}
template<class T>bool next_combination(T l,T r,int k){T m=l+k;if(l==r||l==m||r==m)return false;T t=m;while(l!=t){t--;if(*t<*(r-1)){T d=m;while(*t>=*d)d++;iter_swap(t,d);rotate(t+1,d+1,r);rotate(m,m+(r-d)-1,r);return true;}}rotate(l,m,r);return false;}
template<class T>T Min(T a,T b){return a<b?a:b;}
template<class T,class...Args>T Min(T a,T b,Args...args){return Min(Min(a,b),args...);}
template<class T>T Max(T a,T b){return a>b?a:b;}
template<class T,class...Args>T Max(T a,T b,Args...args){return Max(Max(a,b),args...);}
template<class T>T Sum(T a){return a;}
template<class T,class... Args>T Sum(T a,Args... args){return a+Sum(args...);}
template<class T>T Max(const vector<T>&v){return *max_element(all(v));}
template<class T>T Min(const vector<T>&v){return *min_element(all(v));}
template<class T>T Sum(const vector<T>&v){return accumulate(all(v),T(0));}
template<class S,class T>T Max(const pair<S,T>&p){return max(p.first,p.second);}
template<class S,class T>T Min(const pair<S,T>&p){return min(p.first,p.second);}
template<class S,class T>T Sum(const pair<S,T>&p){return p.first+p.second;}
template<class S,class T>istream&operator>>(istream&s,pair<S,T>&p){s>>p.first>>p.second;return s;}
template<class S,class T>ostream&operator<<(ostream&s,pair<S,T>&p){s<<p.first<<' '<<p.second<<'\n';return s;}
template<class T>istream&operator>>(istream&s,vector<T>&v){for(auto&i:v)s>>i;return s;}
template<class T>ostream&operator<<(ostream&s,vector<T>&v){for(auto&i:v)s<<i<<' ';s<<'\n';return s;}
template<class F>long long bsearch(long long ok,long long ng,F&f){while(abs(ok-ng)>1){long long mid=(ok+ng)/2;if(f(mid))ok=mid;else ng=mid;}return ok;}
const int dxy[5]={0,1,0,-1,0};
const int dx[8]={0,1,0,-1,1,1,-1,-1};
const int dy[8]={1,0,-1,0,1,-1,1,-1};
#define nl '\n'
#define sp ' '
#define inf ((1<<30)-(1<<15))
#define INF (1LL<<61)
#define mod 998244353

void IO() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout<<fixed<<setprecision(30);
}

void solve();
#line 3 "structure/segtree.hpp"
using namespace std;
// op(op(a, b), c) = op(a, op(b, c)) が成り立つ必要がある(結合律)
template<class S, auto op, auto e>
struct segtree {
    int _n, size;
    vector<S> data;
    // 大きさn のセグ木を構築 O(n)
    segtree(int n) : _n(n) { build(vector<S>(n, e())); }
    // 大きさv.size() のセグ木を構築 O(n)
    segtree(vector<S>& v) : _n(v.size()) { build(v); }
    void build(vector<S> v) {
        size = __bit_ceil((unsigned int)_n);
        data.assign(2 * size, e());
        for (int i=0; i<_n; i++) data[size+i] = v[i];
        for (int i=size-1; 0<i; i--) update(i);
    }
    // p 番目の要素をx にする O(log n)
    void set(int p, S x) {
        assert(0 <= p && p < _n);
        p += size;
        data[p] = x;
        for (p>>=1; 0<p; p>>=1) update(p);
    }
    // p 番目の要素を取得する O(1)
    S get(int p) {
        assert(0 <= p && p < _n);
        return data[size+p];
    }
    // p 番目の要素を取得する O(1)
    S operator[](int p) {
        return get(p);
    }
    // [l, r) の区間クエリに答える O(log n)
    S prod(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        S ll = e(), rr = e();
        l += size;
        r += size;
        while (l < r) {
            if (l & 1) ll = op(ll, data[l++]);
            if (r & 1) rr = op(data[--r], rr);
            l >>= 1;
            r >>= 1;
        }
        return op(ll, rr);
    }
    // [0, _n) のクエリに答える O(1)
    S all_prod() {
        return data[1];
    }
    // [0, _n) の区間の値を取得する O(n)
    vector<S> values() {
        vector<S> re(_n);
        for (int i=0; i<_n; i++) re[i] = data[size+i];
        return re;
    }
    void update(int p) {
        data[p] = op(data[2*p], data[2*p+1]);
    }
    // f(op([l, r)))=true となる最大のr を返す O(log n)
    template <class F>
    int max_right(int l, F f) {
        assert(f(e()));
        assert(0 <= l && l <= _n);
        if (l == _n) return l;
        l += size;
        S s = e();
        do {
            while (l % 2 == 0) l >>= 1;
            if (!f(op(s, data[l]))) {
                while (l < size) {
                    l = 2 * l;
                    if (f(op(s, data[l]))) s = op(s, data[l++]);
                }
                return l - size;
            }
            s = op(s, data[l]);
            l++;
        } while (l != (l & -l));
        return _n;
    }
    // f(op([l, r)))=true となる最小のl を返す O(log n)
    template <class F>
    int min_left(int r, F f) {
        assert(f(e()));
        assert(0 <= r && r <= _n);
        if (r == 0) return r;
        r += size;
        S s = e();
        do {
            r--;
            while (r % 2 == 1) r >>= 1;
            if (!f(op(data[r], s))) {
                while (r < size) {
                    r = 2 * r + 1;
                    if (f(op(data[r], s))) s = op(data[r--], s);
                }
                return (r + 1) - size;
            }
            s = op(data[r], s);
        } while(r != (r & -r));
        return 0;
    }
};
#line 4 "util/generalsegtree.hpp"
using namespace std;
using rangesum_int=segtree<int,[](int a,int b)->int{return a+b;},[]()->int{return 0;}>;
using rangesum_ll=segtree<long long,[](long long a,long long b)->long long{return a+b;},[]()->long long{return 0LL;}>;
using rangemin_int=segtree<int,[](int a,int b)->int{return min(a,b);},[]()->int{return numeric_limits<int>::max();}>;
using rangemin_ll=segtree<long long,[](long long a,long long b)->long long{return min(a,b);},[]()->long long{return numeric_limits<long long>::max();}>;
using rangemax_int=segtree<int,[](int a,int b)->int{return max(a,b);},[]()->int{return numeric_limits<int>::min();}>;
using rangemax_ll=segtree<long long,[](long long a,long long b)->long long{return max(a,b);},[]()->long long{return numeric_limits<long long>::min();}>;
#line 4 "verify/yosupo-static_range_sum.test.cpp"

int main() { IO();
    int T=1;
    // cin >> T;

    while (T--) solve();
}

void solve() {
    int n, q; cin >> n >> q;
    vll a(n); cin >> a;
    rangesum_ll seg(a);
    while (q--) {
        int l, r; cin >> l >> r;
        cout << seg.prod(l, r) << nl;
    }
}