結果
| 問題 | 
                            No.2165 Let's Play Nim!
                             | 
                    
| コンテスト | |
| ユーザー | 
                             Nachia
                         | 
                    
| 提出日時 | 2022-12-16 00:29:19 | 
| 言語 | C++17(gcc12)  (gcc 12.3.0 + boost 1.87.0)  | 
                    
| 結果 | 
                             
                                AC
                                 
                             
                            
                         | 
                    
| 実行時間 | 156 ms / 2,000 ms | 
| コード長 | 2,653 bytes | 
| コンパイル時間 | 2,582 ms | 
| コンパイル使用メモリ | 129,636 KB | 
| 最終ジャッジ日時 | 2025-02-09 14:10:28 | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge3 / judge4 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 1 | 
| other | AC * 38 | 
ソースコード
#line 1 "Main.cpp"
#line 1 "Main.cpp"
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <atcoder/modint>
#include <atcoder/segtree>
#line 1 "nachia\\misc\\bit-operations.hpp"
#line 4 "nachia\\misc\\bit-operations.hpp"
namespace nachia{
    int Popcount(unsigned long long c) noexcept {
    #ifdef __GNUC__
        return __builtin_popcountll(c);
    #else
        c = (c & (~0ull/3)) + ((c >> 1) & (~0ull/3));
        c = (c & (~0ull/5)) + ((c >> 2) & (~0ull/5));
        c = (c & (~0ull/17)) + ((c >> 4) & (~0ull/17));
        c = (c * (~0ull/257)) >> 56;
        return c;
    #endif
    }
    // please ensure x != 0
    int MsbIndex(unsigned long long x) noexcept {
    #ifdef __GNUC__
        return 63 - __builtin_clzll(x);
    #else
        int res = 0;
        for(int d=32; d>=0; d>>=1) if(x >> d){ res |= d; x >>= d; }
        return res;
    #endif
    }
    // please ensure x != 0
    int LsbIndex(unsigned long long x) noexcept {
    #ifdef __GNUC__
        return __builtin_ctzll(x);
    #else
        return msb_idx(x & -x);
    #endif
    }
}
#line 9 "Main.cpp"
using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
#define rep(i,n) for(int i=0; i<(int)(n); i++)
const i64 INF = 1001001001001001001;
using Modint = atcoder::static_modint<998244353>;
namespace Segtree {
    using S = int;
    S e(){ return 0; }
    S op(S l, S r){ return l | r; }
    using RQ = atcoder::segtree<S, op, e>;
}
int main(){
    int N; cin >> N;
    vector<int> A(N); rep(i,N) cin >> A[i];
    Segtree::RQ rq(A);
    int allxor = 0;
    for(int a : A) allxor ^= a;
    auto readMove = [&]() -> bool {
        int i,k; cin >> i >> k; i--;
        allxor ^= A[i];
        A[i] -= k;
        allxor ^= A[i];
        rq.set(i, A[i]);
        int r; cin >> r;
        return r == -1;
    };
    auto doMove = [&](){
        int msb = 1 << nachia::MsbIndex(allxor);
        int i = rq.max_right(0, [&](int x){ return 0 == (msb & x); });
        allxor ^= A[i];
        int k = A[i] - allxor;
        cout << (i+1) << ' ' << k << endl;
        A[i] -= k;
        rq.set(i, A[i]);
        allxor ^= A[i];
        int r; cin >> r;
        return r == -1;
    };
    if(allxor != 0){
        cout << 1 << endl;
    } else {
        cout << 0 << endl;
        if(readMove()) return 0;
    }
    while(true){
        if(doMove()) return 0;
        if(readMove()) return 0;
    }
    return 0;
}
struct ios_do_not_sync{
    ios_do_not_sync(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} ios_do_not_sync_instance;
            
            
            
        
            
Nachia