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답안 #51883

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
51883 2018-06-22T11:04:55 Z someone_aa 사다리꼴 (balkan11_trapezoid) C++17
80 / 100
 500 ms 36708 KB 
#include <bits/stdc++.h>
#define ll long long
#define mp make_pair
#define pii pair<int,int>
using namespace std;
const int maxn = 100100;
const ll mod = 30013;
map<int, int> up, down;
int tree[2*4*maxn][2];
int upmax, downmax, n;
int dp[maxn];
int dpways[maxn];

struct trapez {
public:
    int a, b, c, d;
} arr[maxn];

void update(int ux, int value, int valueb, int li=0, int ri=downmax, int index=1) {
    if(li==ri) {
        tree[index][0] += value;
        tree[index][1] += valueb;
        if(tree[index][1] > mod)
            tree[index][1] -= mod;
    }
    else {
        int mid = (li+ri)/2;
        if(ux <= mid) update(ux, value, valueb, li, mid, 2*index);
        else if(ux > mid) update(ux, value, valueb, mid+1, ri, 2*index+1);

        if(tree[2*index][0] == tree[2*index+1][0]) {
            tree[index][0] = tree[2*index][0];
            tree[index][1] = (tree[2*index][1] + tree[2*index+1][1]);
            if(tree[index][1] > mod) tree[index][1] -= mod;
        }
        else if(tree[2*index][0] > tree[2*index+1][0]) {
            tree[index][0] = tree[2*index][0];
            tree[index][1] = tree[2*index][1];
        }
        else {
            tree[index][0] = tree[2*index+1][0];
            tree[index][1] = tree[2*index+1][1];
        }
    }
}

pii emp;

pii query(int ql, int qr, int li=0, int ri=downmax, int index=1) {
    if(li > qr || ri < ql) return emp;
    else if(li >= ql && ri <= qr) return make_pair(tree[index][0], tree[index][1]);
    else {
        int mid = (li+ri)/2;
        pii a = query(ql,qr,li,mid,2*index);
        pii b = query(ql,qr,mid+1,ri,2*index+1);

        if(a.first == b.first) return make_pair(a.first, (a.second+b.second)%mod);
        else if(a.first > b.first) return a;
        else return b;
    }
}

vector<pair<int, bool> > events[2*maxn];

int main() {
    emp.first = 0;
    emp.second = 0;
    scanf("%d", &n);
    for(int i=0;i<n;i++) {
        scanf("%d %d %d %d", &arr[i].a, &arr[i].b, &arr[i].c, &arr[i].d);
        up[arr[i].a] = 1;
        up[arr[i].b] = 1;
        down[arr[i].c] = 1;
        down[arr[i].d] = 1;
    }

    upmax = downmax = 1;
    for(auto i:up) {
        up[i.first] = upmax++;
    }
    for(auto i:down) {
        down[i.first] = downmax++;
    }

    for(int i=0;i<n;i++) {
        arr[i].a = up[arr[i].a];
        arr[i].b = up[arr[i].b];
        arr[i].c = down[arr[i].c];
        arr[i].d = down[arr[i].d];

        events[arr[i].a].push_back(make_pair(i, true));
        events[arr[i].b].push_back(make_pair(i, false));
    }

    update(0,0,1);
    int result = 0;
    int ways = 0;
    for(int i=1;i<=upmax;i++) {
        for(auto j:events[i]) {
            if(j.second) {
                pii temp = query(0, arr[j.first].c);
                dp[j.first] = temp.first + 1;
                dpways[j.first] = temp.second;
                if(dp[j.first] > result) {
                    result = dp[j.first];
                    ways = dpways[j.first];
                }
                else if(dp[j.first] == result) {
                    ways += dpways[j.first];
                    if(ways > mod) ways-=mod;
                }
            }
            else update(arr[j.first].d, dp[j.first], dpways[j.first]);
        }
    }
    printf("%d %d", result, ways);
    return 0;
}

Compilation message

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:68:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
trapezoid.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &arr[i].a, &arr[i].b, &arr[i].c, &arr[i].d);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
80.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 5224 KB Output is correct
3 Correct 7 ms 5300 KB Output is correct
4 Correct 8 ms 5500 KB Output is correct
5 Correct 11 ms 5756 KB Output is correct
6 Correct 19 ms 6184 KB Output is correct
7 Correct 18 ms 6652 KB Output is correct
8 Correct 24 ms 6800 KB Output is correct
9 Correct 46 ms 8520 KB Output is correct
10 Correct 92 ms 11944 KB Output is correct
11 Correct 117 ms 13084 KB Output is correct
12 Correct 260 ms 21092 KB Output is correct
13 Correct 314 ms 23936 KB Output is correct
14 Correct 374 ms 28388 KB Output is correct
15 Correct 476 ms 30024 KB Output is correct
16 Execution timed out 527 ms 31368 KB Time limit exceeded
17 Execution timed out 533 ms 32680 KB Time limit exceeded
18 Correct 499 ms 34020 KB Output is correct
19 Execution timed out 547 ms 34916 KB Time limit exceeded
20 Execution timed out 597 ms 36708 KB Time limit exceeded