oj.uz

답안 #243554

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
243554 2020-07-01T10:07:56 Z abacaba 학교 설립 (IZhO13_school) C++14
85 / 100
 2000 ms 12152 KB 
#include <iostream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <cstring>
#include <chrono>
#include <vector>
#include <map>
#include <random>
#include <set>
#include <algorithm>
#include <math.h>
#include <cstdio>
#include <stdio.h>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <deque>
#include <cassert>
#include <stack>
using namespace std;
 
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define emb emplace_back
#define ll long long
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define endl '\n'
#define uset unordered_set
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
template <typename T> inline T range(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
 
inline void setin(string s) {
    freopen(s.c_str(), "r", stdin);
}
 
inline void setout(string s) {
    freopen(s.c_str(), "w", stdout);
}
 
template <typename T> void Min(T &a, T b) {
    a = min(a, b);
}
 
template <typename T> void Max(T &a, T b) {
    a = max(a, b);
}

#define int long long

const int mod = 998244353;
const int inf = 0x3f3f3f3f;
const int N = 3e5 + 15;
const int M = 100001;
int n, x, y;
pii a[N];

struct pt {
    ll val;
    int x, y;
    bool operator < (const pt &rhs) const {
        if(val == rhs.val) {
            if(x == rhs.x)
                return y > rhs.y;
            return x > rhs.x;
        }
        return val < rhs.val;
    }
    bool operator > (const pt &rhs) const {
        if(val == rhs.val) {
            if(x == rhs.x)
                return y < rhs.y;
            return x < rhs.x;
        }
        return val > rhs.val;
    }
} dp[N];

inline void proceed(int c1, int c2) {
    for(int i = 0; i <= n; ++i)
        dp[i].val = dp[i].x = dp[i].y = 0;
    for(int i = 1; i <= n; ++i) {
        dp[i] = dp[i-1];
        pt nw1 = {dp[i-1].val + a[i].f - c1, dp[i-1].x + 1, dp[i-1].y};
        pt nw2 = {dp[i-1].val + a[i].se - c2, dp[i-1].x, dp[i-1].y + 1};
        Max(dp[i], max(nw1, nw2));
    }
}

main() {
    ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0);
    // setin("input.txt");
    cin >> n >> x >> y;
    for(int i = 1; i <= n; ++i)
        cin >> a[i].f >> a[i].se;
    int l1 = 0, r1 = M;
    pii best(-1, -1);
    // for(int iter1 = 0; iter1 < 20; ++iter1) {
    while(l1 <= r1) {
        int l2 = 0, r2 = M;
        int mid1 = l1 + r1 >> 1;
        int res2 = -1;
        // for(int iter2 = 0; iter2 < 20; ++iter2) {
        while(l2 <= r2) {
            int mid2 = l2 + r2 >> 1;
            proceed(mid1, mid2);
            if(dp[n].y > y)
                l2 = mid2 + 1;
            else
                r2 = mid2 - 1, res2 = mid2;
        }
        proceed(mid1, res2);
        if(dp[n].x > x)
            l1 = mid1 + 1;
        else
            r1 = mid1 - 1, best = {mid1, res2};
    }
    proceed(best.f, best.se);
    cout << dp[n].val + 1ll * x * best.f + 1ll * y * best.se << endl;
    return 0;
}

Compilation message

school.cpp:102:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
school.cpp: In function 'int main()':
school.cpp:113:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid1 = l1 + r1 >> 1;
                    ~~~^~~~
school.cpp:117:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
             int mid2 = l2 + r2 >> 1;
                        ~~~^~~~
school.cpp: In function 'void proceed(long long int, long long int)':
school.cpp:76:32: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
                 return y > rhs.y;
                                ^
school.cpp: In function 'int main()':
school.cpp:76:32: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
                 return y > rhs.y;
                                ^
school.cpp:76:32: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
                 return y > rhs.y;
                                ^

Subtask #1
85.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 6 ms 384 KB Output is correct
7 Correct 33 ms 632 KB Output is correct
8 Correct 31 ms 512 KB Output is correct
9 Correct 33 ms 588 KB Output is correct
10 Correct 32 ms 512 KB Output is correct
11 Correct 36 ms 512 KB Output is correct
12 Correct 37 ms 632 KB Output is correct
13 Correct 227 ms 1792 KB Output is correct
14 Correct 507 ms 3456 KB Output is correct
15 Correct 1031 ms 6608 KB Output is correct
16 Correct 1168 ms 7544 KB Output is correct
17 Incorrect 1447 ms 9080 KB Output isn't correct
18 Correct 1525 ms 9816 KB Output is correct
19 Incorrect 1637 ms 10616 KB Output isn't correct
20 Execution timed out 2035 ms 12152 KB Time limit exceeded