Submission #260005

#	Time	Username	Problem	Language	Result	Execution time	Memory
260005		ly20	Lottery (CEOI18_lot)	C++17	45 / 100	107 ms	65536 KiB

lot

#include <bits/stdc++.h>
using namespace std;
const int MAXN = 11234;
int eq[MAXN][MAXN], resp[MAXN][MAXN];
int v[MAXN];
int main() {
	int n, l;
	scanf("%d %d", &n, &l);
	int id = n - l + 1;
	for(int i = 0; i < n; i++) {
		scanf("%d", &v[i]);
		for(int j = 0; j < i; j++) {
			if(v[i] != v[j]) continue;
			int ini1 = i - l + 1, fim1 = i, ini2 = j - l + 1, fim2 = j;
			int mn = min(ini1, ini2);
			if(mn < 0) {
				ini1 -= mn; ini2 -= mn;
			}
			int mx = max(fim1, fim2);
			eq[ini1][ini2]++; 
			eq[ini2][ini1]++;
			if(fim1 + 1 < id && fim2 + 1 < id) {
				eq[fim1 + 1][fim2 + 1]--;
				eq[fim2 + 1][fim1 + 1]--;
			}
			//printf("%d %d %d %d\n", ini1, ini2, fim1, fim2);
		}
	}
	for(int i = 1; i < id; i++) {
		for(int j = 1; j < id; j++) {
			eq[i][j] += eq[i - 1][j - 1];
		}
	}
	for(int i = 0; i < id; i++) {
		for(int j = 0; j < id; j++) {
			if(i == j) continue;
			//printf("%d %d %d\n", i, j, eq[i][j]);
			resp[i][l - eq[i][j]]++;
		}
	}
	for(int i = 0; i < id; i++) {
		for(int j = 1; j <= l; j++) {
			resp[i][j] += resp[i][j - 1];
		}
	}
	int q;
	scanf("%d", &q);
	for(int i = 0; i < q; i++) {
		int r;
		scanf("%d", &r);
		for(int j = 0; j < id; j++) {
			printf("%d ", resp[j][r]);
		}
		printf("\n");
	}
	return 0;
}

Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:19:8: warning: unused variable 'mx' [-Wunused-variable]
    int mx = max(fim1, fim2);
        ^~
lot.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &l);
  ~~~~~^~~~~~~~~~~~~~~~~
lot.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &v[i]);
   ~~~~~^~~~~~~~~~~~~
lot.cpp:47:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &q);
  ~~~~~^~~~~~~~~~
lot.cpp:50:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &r);
   ~~~~~^~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20