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Submission #298736

# Submission time Handle Problem Language Result Execution time Memory
298736 2020-09-13T22:14:31 Z brkdnmz Unija (COCI17_unija) C++17
100 / 100
 370 ms 54660 KB 
#include <iostream>
#include <fstream>
#include <cstdio>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <stack>
#include <queue>
#include <algorithm>
#include <string.h>
#include <string>
#include <math.h>
#include <iomanip>
#include <cassert>
#include <random>
using namespace std;

#define SORT(v) sort((v).begin(), (v).end())
#define RSORT(v) sort((v).rbegin(), (v).rend())
#define pb push_back
#define FOR(i, n) for(int i = 0; i < (n); i++)
typedef pair<int, int> pii;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;

const int mod = 1e9 + 7;
const int mod2 = 998244353;

void fact_init(int n);
ll exp(ll taban, ll us, ll md);
ll ebob(ll a, ll b);
ll ekok(ll a, ll b);
ll komb(ll a, ll b);

vector<ll> fact;
vector<ll> inv_fact;
void fact_init(int n){
    fact.resize(n+5);
    inv_fact.resize(n+5);
    fact[0] = inv_fact[0] = 1;
    for(int i = 1; i <= n; i++){
        fact[i] = (fact[i-1] * i) % mod;
        inv_fact[i] = exp(fact[i], mod-2, mod);
    }
}
ll exp(ll taban, ll us, ll md) {
    ll carpan = taban % md;
    if(carpan == 0) return 0;
    ll temp = us;
    ll res = 1;
    while(temp){
        if(temp % 2) res = (res*carpan) % md;
        temp /= 2;
        carpan = (carpan*carpan) % md;
    }
    return res;
}
 
ll ebob(ll a, ll b){
    if(!a)return b;
    return ebob(b%a, a);
}

ll ekok(ll a, ll b){
    return (a*b)/ebob(a, b);
}

ll komb(ll a, ll b){
    if(a < b) return 0;
    return fact[a] * (inv_fact[a-b] * inv_fact[b] % mod) % mod;
}
const int N = 1e7 + 5;

int main(){
    ios::sync_with_stdio(false); cin.tie(NULL);
	int n; cin>>n;
	vector<int> cnt(N, 0);
	while(n--){
		int x, y; cin>>x>>y;
		x /= 2;
		cnt[x] = max(cnt[x], y);
	}
	ll res = 0;
	for(int i = N-1; i >= 1; i--){
		if(i < N-1) cnt[i] = max(cnt[i], cnt[i+1]);
		res += cnt[i];
	}
	res *= 2;
	cout<<res<<"\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 39416 KB Output is correct
2 Correct 63 ms 39424 KB Output is correct
3 Correct 64 ms 39424 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 39424 KB Output is correct
2 Correct 63 ms 39416 KB Output is correct
3 Correct 65 ms 39424 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 39552 KB Output is correct
2 Correct 63 ms 39424 KB Output is correct
3 Correct 63 ms 39552 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 39552 KB Output is correct
2 Correct 66 ms 39552 KB Output is correct
3 Correct 65 ms 39552 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 349 ms 54520 KB Output is correct
2 Correct 356 ms 54660 KB Output is correct
3 Correct 370 ms 54520 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 39424 KB Output is correct
2 Correct 63 ms 39416 KB Output is correct
3 Correct 64 ms 39424 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 39936 KB Output is correct
2 Correct 69 ms 39800 KB Output is correct
3 Correct 69 ms 39800 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 40824 KB Output is correct
2 Correct 87 ms 40824 KB Output is correct
3 Correct 85 ms 40960 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 129 ms 43512 KB Output is correct
2 Correct 125 ms 43512 KB Output is correct
3 Correct 128 ms 43512 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 341 ms 54520 KB Output is correct
2 Correct 351 ms 54648 KB Output is correct
3 Correct 341 ms 54520 KB Output is correct