oj.uz

답안 #134478

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
134478 2019-07-22T19:10:20 Z duality 3단 점프 (JOI19_jumps) C++11
100 / 100
 1459 ms 39568 KB 
#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

int A[500000];
vi S;
struct event { int l,r,t; };
bool comp(event a,event b) {
    if (a.l == b.l) return a.t < b.t;
    else return a.l > b.l;
}
vector<event> events;
struct node { int a,b,ab; };
node tree[1 << 20];
node com(node a,node b) {
    node c;
    c.a = max(a.a,b.a),c.b = max(a.b,b.b);
    c.ab = max(a.a+b.b,max(a.ab,b.ab));
    return c;
}
int build(int s,int e,int i) {
    if (s == e) {
        tree[i] = (node){0,A[s],0};
        return 0;
    }

    int mid = (s+e) / 2;
    build(s,mid,2*i+1),build(mid+1,e,2*i+2);
    tree[i] = com(tree[2*i+1],tree[2*i+2]);
    return 0;
}
int update(int s,int e,int ai,int i,int num) {
    if ((s > ai) || (e < ai)) return 0;
    else if (s == e) {
        tree[i].a = max(tree[i].a,num);
        return 0;
    }

    int mid = (s+e) / 2;
    update(s,mid,ai,2*i+1,num),update(mid+1,e,ai,2*i+2,num);
    tree[i] = com(tree[2*i+1],tree[2*i+2]);
    return 0;
}
node query(int s,int e,int qs,int qe,int i) {
    if ((s > qe) || (e < qs)) return (node){0,0,0};
    else if ((s >= qs) && (e <= qe)) return tree[i];

    int mid = (s+e) / 2;
    return com(query(s,mid,qs,qe,2*i+1),query(mid+1,e,qs,qe,2*i+2));
}
int ans[500000];
int main() {
    int i;
    int N,Q,L,R;
    scanf("%d",&N);
    for (i = 0; i < N; i++) scanf("%d",&A[i]);
    scanf("%d",&Q);
    for (i = 0; i < Q; i++) scanf("%d %d",&L,&R),events.pb((event){L-1,R-1,i});

    for (i = 0; i < N; i++) {
        while (!S.empty() && (A[S.back()] <= A[i])) events.pb((event){S.back(),i,-1}),S.pop_back();
        if (!S.empty()) events.pb((event){S.back(),i,-1});
        S.pb(i);
    }
    sort(events.begin(),events.end(),comp);
    build(0,N-1,0);
    for (i = 0; i < events.size(); i++) {
        if (events[i].t != -1) ans[events[i].t] = query(0,N-1,events[i].l,events[i].r,0).ab;
        else update(0,N-1,2*events[i].r-events[i].l-1,0,A[events[i].l]+A[events[i].r]);
    }
    for (i = 0; i < Q; i++) printf("%d\n",ans[i]);

    return 0;
}

Compilation message

jumps.cpp: In function 'int main()':
jumps.cpp:120:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < events.size(); i++) {
                 ~~^~~~~~~~~~~~~~~
jumps.cpp:108:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
jumps.cpp:109:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < N; i++) scanf("%d",&A[i]);
                             ~~~~~^~~~~~~~~~~~
jumps.cpp:110:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&Q);
     ~~~~~^~~~~~~~~
jumps.cpp:111:49: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < Q; i++) scanf("%d %d",&L,&R),events.pb((event){L-1,R-1,i});
                             ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 276 KB Output is correct
10 Correct 2 ms 380 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 276 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 529 ms 13672 KB Output is correct
12 Correct 531 ms 13636 KB Output is correct
13 Correct 546 ms 13664 KB Output is correct
14 Correct 528 ms 13784 KB Output is correct
15 Correct 553 ms 13736 KB Output is correct
16 Correct 575 ms 13028 KB Output is correct
17 Correct 551 ms 13080 KB Output is correct
18 Correct 571 ms 12972 KB Output is correct
19 Correct 549 ms 13532 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 217 ms 12116 KB Output is correct
2 Correct 121 ms 9704 KB Output is correct
3 Correct 121 ms 11424 KB Output is correct
4 Correct 240 ms 12156 KB Output is correct
5 Correct 217 ms 12120 KB Output is correct
6 Correct 209 ms 12144 KB Output is correct
7 Correct 210 ms 12152 KB Output is correct
8 Correct 210 ms 12120 KB Output is correct
9 Correct 219 ms 12124 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 276 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 529 ms 13672 KB Output is correct
12 Correct 531 ms 13636 KB Output is correct
13 Correct 546 ms 13664 KB Output is correct
14 Correct 528 ms 13784 KB Output is correct
15 Correct 553 ms 13736 KB Output is correct
16 Correct 575 ms 13028 KB Output is correct
17 Correct 551 ms 13080 KB Output is correct
18 Correct 571 ms 12972 KB Output is correct
19 Correct 549 ms 13532 KB Output is correct
20 Correct 217 ms 12116 KB Output is correct
21 Correct 121 ms 9704 KB Output is correct
22 Correct 121 ms 11424 KB Output is correct
23 Correct 240 ms 12156 KB Output is correct
24 Correct 217 ms 12120 KB Output is correct
25 Correct 209 ms 12144 KB Output is correct
26 Correct 210 ms 12152 KB Output is correct
27 Correct 210 ms 12120 KB Output is correct
28 Correct 219 ms 12124 KB Output is correct
29 Correct 1451 ms 39332 KB Output is correct
30 Correct 1152 ms 33476 KB Output is correct
31 Correct 1152 ms 37224 KB Output is correct
32 Correct 1431 ms 39336 KB Output is correct
33 Correct 1459 ms 39340 KB Output is correct
34 Correct 1432 ms 38580 KB Output is correct
35 Correct 1437 ms 38556 KB Output is correct
36 Correct 1430 ms 38584 KB Output is correct
37 Correct 1424 ms 39204 KB Output is correct
38 Correct 1167 ms 39240 KB Output is correct
39 Correct 1174 ms 39332 KB Output is correct
40 Correct 1132 ms 37724 KB Output is correct
41 Correct 1151 ms 37396 KB Output is correct
42 Correct 1178 ms 37548 KB Output is correct
43 Correct 1145 ms 38312 KB Output is correct
44 Correct 1225 ms 39340 KB Output is correct
45 Correct 1214 ms 39568 KB Output is correct
46 Correct 1205 ms 38060 KB Output is correct
47 Correct 1210 ms 37724 KB Output is correct
48 Correct 1186 ms 37768 KB Output is correct
49 Correct 1197 ms 38768 KB Output is correct
50 Correct 1279 ms 39452 KB Output is correct
51 Correct 1305 ms 39284 KB Output is correct
52 Correct 1274 ms 38624 KB Output is correct
53 Correct 1248 ms 38476 KB Output is correct
54 Correct 1278 ms 38508 KB Output is correct
55 Correct 1292 ms 39468 KB Output is correct