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 00:23:09 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 2,572 bytes |
| コンパイル時間 | 2,435 ms |
| コンパイル使用メモリ | 130,604 KB |
| 最終ジャッジ日時 | 2025-02-09 14:07:32 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | RE * 1 |
| other | RE * 37 TLE * 1 |
ソースコード
#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];
};
if(allxor != 0){
cout << 1 << endl;
} else {
cout << 0 << endl;
if(readMove()) return 0;
}
while(true){
doMove();
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