Submission #25592

#	Time	Username	Problem	Language	Result	Execution time	Memory
25592		dotorya	스트랩 (JOI14_straps)	C++14	100 / 100	39 ms	2116 KiB

straps

#include <stdio.h>  
#include <algorithm>  
#include <assert.h>
#include <bitset>
#include <cmath>  
#include <complex>  
#include <deque>  
#include <functional>  
#include <iostream>  
#include <limits.h>  
#include <map>  
#include <math.h>  
#include <queue>  
#include <set>  
#include <stdlib.h>  
#include <string.h>  
#include <string>  
#include <time.h>  
#include <unordered_map>  
#include <unordered_set>  
#include <vector>  

#pragma warning(disable:4996)  
#pragma comment(linker, "/STACK:336777216")  
using namespace std;

#define mp make_pair  
#define Fi first  
#define Se second  
#define pb(x) push_back(x)  
#define szz(x) ((int)(x).size())  
#define rep(i, n) for(int i=0;i<n;i++)  
#define all(x) (x).begin(), (x).end()  
#define ldb ldouble  

typedef tuple<int, int, int> t3;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
typedef pair <ll, int> pli;
typedef pair <db, db> pdd;

int IT_MAX = 1 << 15;
const ll MOD = 1000000007;
const int INF = 0x3f3f3f3f;
const ll LL_INF = 0x3f3f3f3f3f3f3f3f;
const db PI = acos(-1);
const db ERR = 1e-10;

ll dp[4050];
ll tdp[4050];
pll in[2050];
int main() {
	int N, i, j;
	scanf("%d", &N);
	for (i = 1; i <= N; i++) scanf("%lld %lld", &in[i].first, &in[i].second);
	sort(in + 1, in + N + 1, [](pll a, pll b) {
		return a.first > b.first;
	});

	for (i = 0; i <= 4000; i++) dp[i] = -LL_INF;
	dp[1] = 0;
	for (i = 1; i <= N; i++) {
		for (j = 0; j <= 4000; j++) tdp[j] = dp[j];
		for (j = 1; j <= 4000; j++) {
			ll v = min(4000ll, j - 1 + in[i].first);
			tdp[v] = max(tdp[v], in[i].second + dp[j]);
		}
		for (j = 0; j <= 4000; j++) dp[j] = tdp[j];
	}

	ll ans = 0;
	for (i = 0; i <= 4000; i++) ans = max(ans, dp[i]);
	return !printf("%lld\n", ans);
}

Compilation message (stderr)

straps.cpp:23:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable:4996)  
 ^
straps.cpp:24:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/STACK:336777216")  
 ^
straps.cpp: In function 'int main()':
straps.cpp:58:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
straps.cpp:59:74: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i = 1; i <= N; i++) scanf("%lld %lld", &in[i].first, &in[i].second);
                                                                          ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 45 / 45
• Subtask 4: 45 / 45