답안 #57158 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
57158	2018-07-14T07:28:57 Z	김세빈(#1653)	Skyscraper (JOI16_skyscraper)	C++11	컴파일 오류	0 ms	0 KB

skyscraper

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const ll mod = 1e9 + 7;
const int c = 101010;

int D[2][111][3][220202];
int A[111];
int n, k, ans;

int main()
{
	int i, j, l, x;
	
	scanf("%d%d", &n, &k);
	
	for(i=1;i<=n;i++){
		scanf("%d", A+i);
	}
	
	if(n == 1){
		pritnf("1\n");
		return 0;
	}
	
	sort(A+1, A+n+1);
	
	for(i=n;i>=1;i--) A[i] -= A[1];
	
	D[0][0][0][0 + c] = 1;
	
	for(i=1;i<n;i++){
		for(j=0;j<=i;j++){
			for(l=-101010;l<=101010;l++){
				// endpoints
				if(j){
					D[i&1][j-1][1][l + A[i] + c] = (D[i&1][j-1][1][l + A[i] + c] + D[~i&1][j][0][l + c] * (ll)2) % mod;
				}
				D[i&1][j][1][l - A[i] + c] = (D[i&1][j][1][l - A[i] + c] + D[~i&1][j][0][l + c] * (ll)2) % mod;
				
				
				if(j){
					D[i&1][j-1][2][l + A[i] + c] = (D[i&1][j-1][2][l + A[i] + c] + D[~i&1][j][1][l + c]) % mod;
					D[i&1][j-1][1][l + 2*A[i] + c] = (D[i&1][j-1][1][l + 2*A[i] + c] + D[~i&1][j][1][l + c]) % mod;
				}
				D[i&1][j][2][l - A[i] + c] = (D[i&1][j][2][l - A[i] + c] + D[~i&1][j][1][l + c]) % mod;
				D[i&1][j][1][l + c] = (D[i&1][j][1][l + c] + D[~i&1][j][1][l + c]) % mod;
				
				
				if(j){
					D[i&1][j-1][2][l + 2*A[i] + c] = (D[i&1][j-1][2][l + 2*A[i] + c] + D[~i&1][j][2][l + c] * (ll)2) % mod;
				}
				D[i&1][j][2][l + c] = (D[i&1][j][2][l + c] + D[~i&1][j][2][l + c] * (ll)2) % mod;
				
				
				for(x=0;x<3;x++){
					// new group
					D[i&1][j+1][x][l - 2*A[i] + c] = (D[i&1][j+1][x][l - 2*A[i] + c] + D[~i&1][j][x][l + c] * (ll)(j + 1)) % mod;
					
					// merge two groups
					if(j > 1){
						D[i&1][j-1][x][l + 2*A[i] + c] = (D[i&1][j-1][x][l + 2*A[i] + c] + D[~i&1][j][x][l + c] * (ll)(j - 1)) % mod;
					}
					
					// group endpoints
					D[i&1][j][x][l + c] = (D[i&1][j][x][l + c] + D[~i&1][j][x][l + c] * (ll)2 * j) % mod;
					
					D[~i&1][j][x][l + c] = 0;
				}
			}
		}
	}
	
	for(l=-101010;l<=101010;l++){
		if(0 <= l + A[n] * 2 && l + A[n] * 2 <= k) ans = (ans + D[~n&1][0][2][l + c]) % mod;
		if(0 <= l + A[n] && l + A[n] <= k) ans = (ans + D[~n&1][0][1][l + c]) % mod;
	}
	
	printf("%d\n", ans);
	
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:25:3: error: 'pritnf' was not declared in this scope
   pritnf("1\n");
   ^~~~~~
skyscraper.cpp:25:3: note: suggested alternative: 'printf'
   pritnf("1\n");
   ^~~~~~
   printf
skyscraper.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", A+i);
   ~~~~~^~~~~~~~~~~