Submission #1337578

---

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 = 2e5 + 10;
int a[N];
int64 s[N], dp[N];

int main() {
  int n, m;
  scanf("%d", &n);
  for (int i = 0; i < n - 1; ++i) {
    scanf("%d", &a[i]);
  }
  scanf("%d", &m);
  assert(m == 1);
  scanf("%d", &a[n - 1]);
  s[0] = a[0];
  for (int i = 1; i < n; ++i) {
    s[i] = s[i - 1] + a[i];
  }
  dp[n - 1] = 0;
  int64 best = s[n - 2] - a[n - 1] + dp[n - 1];
  for (int i = n - 2; i >= 1; --i) {
    dp[i] = s[i] - best;
    best = min(best, s[i - 1] - a[i] + dp[i]);
  }
  printf("%lld\n", dp[1] + a[0] - a[1]);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:47:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:49:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
                       ^
./Main.cpp:51:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &m);
                  ^
./Main.cpp:53:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[n - 1]);
                         ^

Judge Result