Submission #98533

#	Time	Username	Problem	Language	Result	Execution time	Memory
98533		tincamatei	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	99 ms	512 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 2000;
const int MAX_N2 = 100;

int dp1[1+MAX_N];
bool dp2[1+MAX_N2][1+MAX_N2];
int y[1+MAX_N];

long long dodp1(int n, int lim) {
	long long rez = 0LL;
	for(int l = 41; l >= 0; --l) {
		long long allowedSet = (rez | ((1LL << l) - 1));
		for(int i = 1; i <= n; ++i) {
			long long s = 0LL;
			dp1[i] = n + 1;
			for(int j = i; j > 0; --j) {
				s += y[j];
				if((s | allowedSet) == allowedSet)
					dp1[i] = min(dp1[i], dp1[j - 1] + 1);
			}
		}
		if(dp1[n] > lim)
			rez = (rez | (1LL << l));
	}
	return rez;
}

long long dodp2(int n, int lim1, int lim2) {
	long long rez = 0LL;
	for(int l = 41; l >= 0; --l) {
		long long allowedSet = (rez | ((1LL << l) - 1));
		dp2[0][0] = true;
		for(int i = 1; i <= n; ++i) {
			for(int j = 1; j <= n; ++j) {
				long long s = 0LL;
				dp2[i][j] = false;
				for(int k = j; k > 0; --k) {
					s += y[k];
					if((s | allowedSet) == allowedSet)
						dp2[i][j] |= dp2[i - 1][k - 1];
				}
			}
		}

		bool ok = false;
		for(int i = lim1; i <= lim2; ++i)
			if(dp2[i][n])
				ok = true;

		if(!ok)
			rez = (rez | (1LL << l));
	}
	return rez;
}

int main() {
#ifdef HOME
	FILE *fin = fopen("input.in", "r");
	FILE *fout = fopen("output.out", "w");
#else
	FILE *fin = stdin;
	FILE *fout = stdout;
#endif

	int n, a, b;
	fscanf(fin, "%d%d%d", &n, &a, &b);
	for(int i = 1; i <= n; ++i)
		fscanf(fin, "%d", &y[i]);
	
	if(a == 1)
		fprintf(fout, "%lld", dodp1(n, b));
	else
		fprintf(fout, "%lld", dodp2(n, a, b));

#ifdef HOME
	fclose(fin);
	fclose(fout);
#endif
	return 0;
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:69:8: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fscanf(fin, "%d%d%d", &n, &a, &b);
  ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:71:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   fscanf(fin, "%d", &y[i]);
   ~~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 25 / 25
• Subtask 5: 29 / 29