답안 #12937

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
12937	2015-01-21T04:58:52 Z	model_code	케이크 (JOI13_cake)	C++	100 / 100	260 ms	70692 KB

cake

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<vector>
#include<cassert>

using namespace std;

#define MAXN 300000
#define LOGN 20
#define MAXA 1000000000

typedef long long ll;
typedef pair<int,int> pint;

#define repp(i,a,b) for(int i=(int)(a);i<=(b);++i)
#define rep(i,n) repp(i,0,(n)-1)

#define mp make_pair

int n;
int a[3*MAXN+10];
ll ans[MAXN+10];
int minv=MAXA+1,minp;

int depth=0;

pint rmqdata[MAXN][LOGN];
void buildrmq(){
	for(int i=0; i<n-1; ++i) rmqdata[i][0]=mp(a[i],i);
	for(int sz=1,j=1; 2*sz<=n-1; sz*=2,++j){
		for(int i=0; i<=n-1-2*sz; ++i){
			rmqdata[i][j] = min(rmqdata[i][j-1], rmqdata[i+sz][j-1]);
		}
	}
}
pint rmq(int le,int ri){
	int j=0, sz=1;
	while(ri-le+1 >= sz*2){
		sz *= 2;
		++j;
	}
	return min(rmqdata[le][j], rmqdata[ri-sz+1][j]);
}

ll ruisekiwa[MAXN+10];
void buildruiseki(){
	ruisekiwa[0] = 0LL;
	ruisekiwa[1] = 0LL;
	repp(i, 0, n-2){
		ruisekiwa[i+2] = ruisekiwa[i] + a[i];
	}
}
ll kogoruiseki(int st, int en, int par){
	par %= 2;
	ll res;
	if(st < en){
		if(par==0){
			if((en-st)%2)
				res = ruisekiwa[en+1] - ruisekiwa[st];
			else
				res = ruisekiwa[en+2] - ruisekiwa[st];
		}else{
			if((en-st)%2)
				res = ruisekiwa[en+2] - ruisekiwa[st+1];
			else
				res = ruisekiwa[en+1] - ruisekiwa[st+1];
		}
	}else{
		if(par==0){
			if((en-st)%2)
				res = ruisekiwa[st+2] - ruisekiwa[en+1];
			else
				res = ruisekiwa[st+2] - ruisekiwa[en];
		}else{
			if((en-st)%2)
				res = ruisekiwa[st+1] - ruisekiwa[en];
			else
				res = ruisekiwa[st+1] - ruisekiwa[en+1];
		}
	}
	return res;
}

void add(int le, int ri, ll v){
	assert(0 <= le && ri <= n-2);
	ans[le] += v;
	ans[ri+1] -= v;
}

void midsolve(int le, int ri, int mi){
	while(le < mi && mi < ri){
		int l = rmq(le, mi-1).second;
		int r = rmq(mi+1, ri).second;
		if(a[l] < a[r]){
			add(mi, mi, kogoruiseki(l, le, ri-l));
			le = l+1;
		}else{
			add(mi, mi, kogoruiseki(r, ri, r-le));
			ri = r-1;
		}
	}
	if(le == mi){
		add(mi, mi, kogoruiseki(mi, ri, 0));
	}else{
		add(mi, mi, kogoruiseki(mi, le, 0));
	}
}
void solve(int le, int ri){
	if(ri-le < 0) {
		return;
	}
	pint mid = rmq(le,ri);
	int mi = mid.second;
++depth;
	if(ri-le == 0){
		add(le, ri, a[le]);
--depth;
		return;
	}else if(ri-le == 1){
		add(le, le, a[le]);
		add(ri, ri, a[ri]);
--depth;
		return;
	}
	solve(le, mi-1);
	add(le, mi-1, kogoruiseki(mi, ri, mi-le));
	solve(mi+1, ri);
	add(mi+1, ri, kogoruiseki(mi, le, ri-mi));
	midsolve(le, ri, mi);
--depth;
}

ll saishou(){
	ll res = minv;
	int le=0, ri=n-2, cnt=0;
	while(le<=ri){
		if(a[le] < a[ri]){
			if(cnt%2) res += a[ri];
			--ri; ++cnt;
		}else{
			if(cnt%2) res += a[le];
			++le; ++cnt;
		}
	}
	return res;
}

int main(){
	cin >> n;
	rep(i,n){
		scanf("%d",&a[n+i]);
	}
	rep(i,n){
		if(a[n+i] < minv) {
			minv = a[n+i];
			minp = i;
		}
	}
	int i,j=0;
	for(i=minp+1; i<n; ++i,++j){
		a[j] = a[n+i];
	}
	for(i=0; j<n-1; ++i,++j){
		a[j] = a[n+i];
	}


	buildrmq();
	buildruiseki();
	solve(0,n-2);

	if(n%2) ans[0] += minv;
	repp(i,1,n-2) ans[i] += ans[i-1];

	for(int i=n-1-minp; i<n-1; ++i){
		printf("%lld\n", ans[i]);
	}
	printf("%lld\n", saishou());
	for(int i=0; i<n-1-minp; ++i){
		printf("%lld\n", ans[i]);
	}
	return 0;
}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	56756 KB	Output is correct
2	Correct	8 ms	56864 KB	Output is correct
3	Correct	8 ms	56756 KB	Output is correct
4	Correct	20 ms	56756 KB	Output is correct
5	Correct	20 ms	56756 KB	Output is correct
6	Correct	16 ms	56756 KB	Output is correct
7	Correct	4 ms	56756 KB	Output is correct
8	Correct	12 ms	56756 KB	Output is correct
9	Correct	8 ms	56756 KB	Output is correct
10	Correct	12 ms	56756 KB	Output is correct
11	Correct	8 ms	56756 KB	Output is correct

Subtask #2

90.0 / 90.0

#	결과	실행 시간	메모리	Grader output
1	Correct	100 ms	56772 KB	Output is correct
2	Correct	76 ms	56756 KB	Output is correct
3	Correct	80 ms	56860 KB	Output is correct
4	Correct	184 ms	56756 KB	Output is correct
5	Correct	152 ms	56756 KB	Output is correct
6	Correct	228 ms	56756 KB	Output is correct
7	Correct	236 ms	61320 KB	Output is correct
8	Correct	244 ms	56756 KB	Output is correct
9	Correct	260 ms	56756 KB	Output is correct
10	Correct	220 ms	63664 KB	Output is correct
11	Correct	240 ms	57860 KB	Output is correct
12	Correct	232 ms	59444 KB	Output is correct
13	Correct	240 ms	62824 KB	Output is correct
14	Correct	224 ms	70692 KB	Output is correct
15	Correct	236 ms	58320 KB	Output is correct