結果

問題 No.2229 Treasure Searching Rod (Hard)
ユーザー ゆにぽけ
提出日時 2023-11-05 14:06:29
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 63 ms / 2,000 ms
コード長 4,115 bytes
コンパイル時間 1,251 ms
コンパイル使用メモリ 123,084 KB
最終ジャッジ日時 2025-02-17 19:25:03
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 29
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<iostream>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cassert>
#include<cmath>
#include<ctime>
#include<iomanip>
#include<numeric>
#include<stack>
#include<queue>
#include<map>
#include<unordered_map>
#include<set>
#include<unordered_set>
#include<bitset>
#include<random>
#include<functional>
#include<utility>
using namespace std;
template<class T,T (*op)(T,T),T (*e)()> struct segtree
{
private:
int size,N;
vector<T> node;
public:
segtree(int N = 0) : segtree(vector<T>(N,e())) {}
segtree(const vector<T> &V)
{
N = (int)V.size();
size = 1;
while(size < N) size <<= 1;
node.resize(2*size);
for(int i = 0;i < N;i++) node[i+size] = V[i];
for(int i = size-1;i >= 1;i--) node[i] = op(node[i*2],node[i*2+1]);
}
void replace(int pos,T x) {func_update(pos,x,[](T u,T v){return u = v;});}
void add(int pos,T x) {func_update(pos,x,[](T u,T v){return u + v;});}
void func_update(int pos,T x) {func_update(pos,x,op);}
void func_update(int pos,T x,T (*func)(T,T))
{
assert(0 <= pos && pos < N);
pos += size;
node[pos] = func(node[pos],x);
pos >>= 1;
while(pos)
{
node[pos] = op(node[pos*2],node[pos*2+1]);
pos >>= 1;
}
}
T operator[](int pos)
{
assert(0 <= pos && pos < N);
return node[pos+size];
}
T prod(int l,int r)
{
assert(0 <= l && l <= r && r <= N);
T L = e(),R = e();
l += size,r += size;
while(l < r)
{
if(l & 1) L = op(L,node[l++]);
if(r & 1) R = op(node[--r],R);
l >>= 1,r >>= 1;
}
return op(L,R);
}
T prod() {return node[1];}
};
int op(int a,int b) {return max(a,b);}
int e() {return 0;}
template<int m> struct modint
{
private:
unsigned int value;
static constexpr int mod() {return m;}
public:
constexpr modint(const long long x = 0) noexcept
{
long long y = x;
if(y < 0 || y >= mod())
{
y %= mod();
if(y < 0) y += mod();
}
value = (unsigned int)y;
}
constexpr unsigned int val() noexcept {return value;}
constexpr modint &operator+=(const modint &other) noexcept
{
value += other.value;
if(value >= mod()) value -= mod();
return *this;
}
constexpr modint &operator-=(const modint &other) noexcept
{
unsigned int x = value;
if(x < other.value) x += mod();
x -= other.value;
value = x;
return *this;
}
constexpr modint &operator*=(const modint &other) noexcept
{
unsigned long long x = value;
x *= other.value;
value = (unsigned int) (x % mod());
return *this;
}
constexpr modint &operator/=(const modint &other) noexcept
{
return *this *= other.inverse();
}
constexpr modint inverse() const noexcept
{
assert(value);
long long a = value,b = mod(),x = 1,y = 0;
while(b)
{
long long q = a/b;
a -= q*b; swap(a,b);
x -= q*y; swap(x,y);
}
return modint(x);
}
constexpr modint power(long long N) const noexcept
{
assert(N >= 0);
modint p = *this,ret = 1;
while(N)
{
if(N & 1) ret *= p;
p *= p;
N >>= 1;
}
return ret;
}
constexpr modint operator+() {return *this;}
constexpr modint operator-() {return modint() - *this;}
constexpr modint &operator++(int) noexcept {return *this += 1;}
constexpr modint &operator--(int) noexcept {return *this -= 1;}
friend modint operator+(const modint& lhs, const modint& rhs) {return modint(lhs) += rhs;}
friend modint operator-(const modint& lhs, const modint& rhs) {return modint(lhs) -= rhs;}
friend modint operator*(const modint& lhs, const modint& rhs) {return modint(lhs) *= rhs;}
friend modint operator/(const modint& lhs, const modint& rhs) {return modint(lhs) /= rhs;}
friend ostream &operator<<(ostream &os,const modint &x) {return os << x.value;}
};
using mint = modint<998244353>;
/* using mint = modint<1000000007>; */
int H,W,K;
void solve()
{
cin >> H >> W >> K;
mint ans = 0;
for(int i = 0;i < K;i++)
{
int x,y,v;
cin >> x >> y >> v;
mint cur = mint(x)*x;
int l = x-y,r = x-(W-y+1);
if(l > 0) cur -= (long long)l*(l+1)/2;
if(r > 0) cur -= (long long)r*(r+1)/2;
ans += cur*v;
}
cout << ans << endl;
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
int tt = 1;
/* cin >> tt; */
while(tt--) solve();
}
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