Submission #1333603

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Source Code Expand

#define _USE_MATH_DEFINES
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <complex>
#include <cmath>
#include <numeric>
#include <bitset>

using namespace std;

#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << ": " << arg1 << endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << ": " << arg1 << " |";
  __f(comma + 1, args...);
}

typedef long long int64;
typedef pair<int, int> ii;
const int INF = 1 << 30;
const int MOD = 1e9 + 7;

const int N = 6000;
int a[N];
bool L[N][N], R[N][N];
int sum[N][N];

int main() {
  int n, m;
  scanf("%d%d", &n, &m);
  for (int i = 0; i < n; ++i) {
    scanf("%d", &a[i]);
  }
  L[0][0] = true;
  for (int i = 0; i < n; ++i) {
    copy(L[i], L[i] + m, L[i + 1]);
    for (int j = m - 1; j >= a[i]; --j) {
      L[i + 1][j] |= L[i][j - a[i]];
    }
  }
  R[n][0] = true;
  for (int i = n - 1; i >= 0; --i) {
    copy(R[i + 1], R[i + 1] + m, R[i]);
    for (int j = m - 1; j >= a[i]; --j) {
      R[i][j] |= R[i + 1][j - a[i]];
    }
  }
  for (int i = 0; i <= n; ++i) {
    sum[i][0] = 0;
    for (int j = 1; j <= m; ++j) {
      sum[i][j] = sum[i][j - 1] + R[i][j - 1];
    }
  }
  int ret = 0;
  for (int i = 0; i < n; ++i) {
    int vl = max(0, m - a[i]), vr = m - 1;
    bool found = false;
    for (int j = 0; j <= vr; ++j) {
      if (!L[i][j]) continue;
      int kr = vr - j, kl = max(0, vl - j);
      if (sum[i + 1][kr + 1] - sum[i + 1][kl] > 0) {
        found = true;
        break;
      }
    }
    if (!found) ++ret;
  }
  printf("%d\n", ret);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:48:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &m);
                        ^
./Main.cpp:50:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
                       ^

Judge Result