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답안 #25944

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
25944 2017-06-25T07:43:18 Z 김현수(#1087) 케이크 (CEOI14_cake) C++11
100 / 100
 433 ms 12028 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
const ll N = 250005;

ll n, s, q, a[N], sz, li[15];
bool in[N];

struct segtree {
	ll val[4*N], lim;
	void init () {
		for(lim=1;lim<=N;lim<<=1);
		for(ll i=1;i<=n;i++) val[lim+i] = a[i];
		for(ll i=lim;--i;) val[i] = max(val[2*i], val[2*i+1]);
	}
	void upd (ll P, ll V) {
		P += lim;
		while(P) {val[P] = max(val[P], V); P >>= 1;}
	}
	ll get (ll S, ll E) {
		ll R = 0; S += lim; E += lim;
		while(S <= E) {
			if(S%2==1) {R = max(R, val[S]); S++;}
			if(E%2==0) {R = max(R, val[E]); E--;}
			S>>=1; E>>=1;
		}
		return R;
	}
	ll lb (ll P, ll X) {
		P += lim;
		while(P&(P+1)) {
			if(val[P] >= X) break;
			P = (P-1)/2;
		}
		if(!(P&(P+1))) return 0;
		while(P < lim) {
			if(val[2*P+1] >= X) P = 2*P+1;
			else P = 2*P;
		}
		return P - lim;
	}
	ll rb (ll P, ll X) {
		P += lim;
		while(P&(P-1)) {
			if(val[P] >= X) break;
			P = (P+1)/2;
		}
		if(!(P&(P-1))) return n+1;
		while(P < lim) {
			if(val[2*P] >= X) P = 2*P;
			else P = 2*P+1;
		}
		return P - lim;
	}
} seg;

int main()
{
	scanf("%lld%lld",&n,&s);
	sz = min(10ll, n);
	for(ll i=1;i<=n;i++) {
		scanf("%lld",&a[i]);
		if(a[i] > n-sz) {
			li[n-a[i]+1] = i;
			in[i] = true;
		}
	}
	seg.init();
	scanf("%lld",&q);
	while(q--) {
		char typ[2];
		scanf("%s",typ);
		if(typ[0] == 'F') {
			ll P, V;
			scanf("%lld",&P);
			if(P == s) puts("0");
			else if(P < s) {
				V = seg.get(P, s-1);
				printf("%lld\n", seg.rb(s+1, V)-P-1);
			}
			else if(P > s) {
				V = seg.get(s+1, P);
				printf("%lld\n", P-seg.lb(s-1, V)-1);
			}
		}
		else {
			ll P, Q;
			scanf("%lld%lld",&P,&Q);
			for(ll i=1;i<Q;i++) {
				a[li[i]]++;
				seg.upd(li[i], a[li[i]]);
			}
			a[P] = a[li[Q]]+1;
			seg.upd(P, a[P]);
			li[sz+1] = (in[P] ? 0 : P);
			for(ll i=sz;i;i--) {
				if(a[li[i]] < a[li[i+1]]) {
					swap(li[i], li[i+1]);
				}
			}
			in[li[sz+1]] = false;
			in[P] = true;
		}
	}
}

Compilation message

cake.cpp: In function 'int main()':
cake.cpp:60:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld",&n,&s);
                         ^
cake.cpp:63:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
                      ^
cake.cpp:70:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&q);
                  ^
cake.cpp:73:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",typ);
                  ^
cake.cpp:76:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld",&P);
                    ^
cake.cpp:89:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld%lld",&P,&Q);
                           ^

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 12028 KB Output is correct
2 Correct 0 ms 12028 KB Output is correct
3 Correct 0 ms 12028 KB Output is correct
4 Correct 0 ms 12028 KB Output is correct
5 Correct 6 ms 12028 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 243 ms 12028 KB Output is correct
2 Correct 159 ms 12028 KB Output is correct
3 Correct 223 ms 12028 KB Output is correct
4 Correct 166 ms 12028 KB Output is correct
5 Correct 196 ms 12028 KB Output is correct
6 Correct 213 ms 12028 KB Output is correct
7 Correct 189 ms 12028 KB Output is correct
8 Correct 193 ms 12028 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 69 ms 12028 KB Output is correct
2 Correct 63 ms 12028 KB Output is correct
3 Correct 66 ms 12028 KB Output is correct
4 Correct 0 ms 12028 KB Output is correct
5 Correct 99 ms 12028 KB Output is correct
6 Correct 116 ms 12028 KB Output is correct
7 Correct 66 ms 12028 KB Output is correct

Subtask #4
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 12028 KB Output is correct
2 Correct 26 ms 12028 KB Output is correct
3 Correct 49 ms 12028 KB Output is correct
4 Correct 59 ms 12028 KB Output is correct
5 Correct 76 ms 12028 KB Output is correct
6 Correct 93 ms 12028 KB Output is correct
7 Correct 106 ms 12028 KB Output is correct
8 Correct 116 ms 12028 KB Output is correct
9 Correct 369 ms 12028 KB Output is correct
10 Correct 263 ms 12028 KB Output is correct
11 Correct 316 ms 12028 KB Output is correct
12 Correct 433 ms 12028 KB Output is correct
13 Correct 389 ms 12028 KB Output is correct