結果
| 問題 |
No.151 セグメントフィッシング
|
| コンテスト | |
| ユーザー |
kei
|
| 提出日時 | 2018-08-19 16:35:32 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 31 ms / 5,000 ms |
| コード長 | 2,509 bytes |
| コンパイル時間 | 1,829 ms |
| コンパイル使用メモリ | 171,376 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-11-17 13:11:26 |
| 合計ジャッジ時間 | 3,466 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 19 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
/*
<url:https://yukicoder.me/problems/no/151>
問題文============================================================
=================================================================
解説=============================================================
================================================================
*/
struct BIT {
int N;
vector<ll> bit;
BIT(int N):N(N) {
bit.resize(N + 1, 0);
}
void add(int x, ll val){
x++;
while (x <= N) {
bit[x] += val;
x += x & -x;
}
}
// [0,x)
ll sum(int x){
ll ret = 0;
while (x) {
ret += bit[x];
x &= (x - 1);
}
return (ret);
}
// [l,r)
ll sum(int l,int r){
return sum(r) - sum(l);
}
};
void solve(){
int N,Q; cin >> N >> Q;
BIT bitL(N+Q), bitR(N+Q);
int Lboundary = 0,Rboundary = Q;
while(Q--){
char x; int y,z; cin >> x >> y >> z;
Lboundary++; Rboundary--;
bitL.add(Lboundary+N-1,bitR.sum(Rboundary+N,Rboundary+N+1));
bitR.add(Rboundary,bitL.sum(Lboundary-1,Lboundary));
if(x == 'L'){
bitL.add(Lboundary+y,z);
}else if(x == 'R'){
bitR.add(Rboundary+y,z);
}else{
ll Sum = 0;
Sum += bitL.sum(Lboundary+y,Lboundary+z);
Sum += bitR.sum(Rboundary+y,Rboundary+z);
cout << Sum << endl;
}
}
}
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
solve();
return 0;
}
kei