제출 #372989

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
372989		AmineWeslati	Hiring (IOI09_hiring)	C++14	50 / 100	1598 ms	13308 KiB

hiring

//Never stop trying
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

typedef long long ll;
#define int ll
typedef string str;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)

const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up

template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
ll random(ll a, ll b){
    return a + rng() % (b - a + 1);
}
#ifndef LOCAL  
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl; 
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;

void IO() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin); 
    freopen("output.txt", "w", stdout);
#endif
}
/////////////////////////ONLY CLEAN CODES ALLOWED/////////////////////////

int N,W; 
vi S(MX),Q(MX);

bool check(int x, int y, int xx, int yy){
	return yy*x-xx*y<0;
}

int32_t main() {
    boost; IO();

    cin>>N>>W;
    FOR(i,1,N+1) cin>>S[i]>>Q[i];

    int ans=0,x=0,y=1; 
    vi vec;

    FOR(i,1,N+1){
    	int s=S[i],q=Q[i];
    	vpi v;
    	vi chosen;
    	FOR(j,1,N+1) if(S[i]*Q[j]>=S[j]*Q[i]) v.eb(S[i]*Q[j],j);
    	sort(all(v));

    	int cnt=0,cur=0;
    	for(auto it: v){
    		int x=it.fi,idx=it.se;
    		if(cur+x>W*Q[i]) break;
    		cnt++,
    		cur+=x;
    		chosen.pb(idx);
    	}

    	if(ckmax(ans,cnt) || (ans==cnt && check(cur,Q[i],x,y))){
    		tie(x,y)={cur,Q[i]};
    		vec.assign(all(chosen));
		}
		/*if(i==1){
			dbg(cur)
			dbgv(chosen)
		}*/
		dbgs(x,y)
    }
    cout << ans << endl;
    for(auto x: vec) cout << x << ' '; cout << endl;
    

    return 0;
}
//Change your approach 

컴파일 시 표준 에러 (stderr) 메시지

hiring.cpp: In function 'int32_t main()':
hiring.cpp:73:10: warning: unused variable 's' [-Wunused-variable]
   73 |      int s=S[i],q=Q[i];
      |          ^
hiring.cpp:73:17: warning: unused variable 'q' [-Wunused-variable]
   73 |      int s=S[i],q=Q[i];
      |                 ^
hiring.cpp:99:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   99 |     for(auto x: vec) cout << x << ' '; cout << endl;
      |     ^~~
hiring.cpp:99:40: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   99 |     for(auto x: vec) cout << x << ' '; cout << endl;
      |                                        ^~~~

• Subtask 1: 20 / 30
• Subtask 2: 12 / 28
• Subtask 3: 6 / 6
• Subtask 4: 6 / 6
• Subtask 5: 6 / 6
• Subtask 6: 0 / 6
• Subtask 7: 0 / 6
• Subtask 8: 0 / 6
• Subtask 9: 0 / 6