oj.uz

Submission #243565

# Submission time Handle Problem Language Result Execution time Memory
243565 2020-07-01T10:23:03 Z abacaba Schools (IZhO13_school) C++14
80 / 100
 2000 ms 7288 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);
}
 
const int mod = 998244353;
const int inf = 0x3f3f3f3f;
const int N = 3e5 + 15;
const int M = 1e5 + 1;
int n, x, y;
pii a[N];
 
struct pt {
    double 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(double c1, double 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;
    double l1 = 0, r1 = M;
    // pii best(-1, -1);
    pair <double, double> best(-1, -1);
    for(int iter1 = 0; iter1 < 20; ++iter1) {
    // while(l1 <= r1) {
        // int l2 = 0, r2 = M;
        double l2 = 0, r2 = M;
        double mid1 = (l1 + r1) / 2;
        double res2 = -1;
        for(int iter2 = 0; iter2 < 20; ++iter2) {
        // while(l2 <= r2) {
            double mid2 = (l2 + r2) / 2;
            proceed(mid1, mid2);
            if(dp[n].y > y)
                l2 = mid2;
            else
                r2 = mid2, res2 = mid2;
        }
        proceed(mid1, res2);
        if(dp[n].x > x)
            l1 = mid1;
        else
            r1 = mid1, best = {mid1, res2};
    }
    proceed(best.f, best.se);
    cout << (ll)(dp[n].val + 1ll * x * best.f + 1ll * y * best.se) << endl;
    return 0;
}

Compilation message

school.cpp:100:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
school.cpp: In function 'void proceed(double, double)':
school.cpp:74:32: 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:74:32: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
                 return y > rhs.y;
                                ^
school.cpp:74:32: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
                 return y > rhs.y;
                                ^

Subtask #1
80.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 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 38 ms 512 KB Output is correct
8 Correct 37 ms 512 KB Output is correct
9 Correct 38 ms 512 KB Output is correct
10 Correct 41 ms 512 KB Output is correct
11 Correct 44 ms 512 KB Output is correct
12 Correct 42 ms 512 KB Output is correct
13 Correct 268 ms 1152 KB Output is correct
14 Correct 664 ms 2296 KB Output is correct
15 Correct 968 ms 4096 KB Output is correct
16 Correct 1347 ms 4728 KB Output is correct
17 Incorrect 1708 ms 5624 KB Output isn't correct
18 Incorrect 1940 ms 6044 KB Output isn't correct
19 Execution timed out 2088 ms 6392 KB Time limit exceeded
20 Execution timed out 2085 ms 7288 KB Time limit exceeded