提出 #1720624

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ソースコード 拡げる

#include <bits/stdc++.h>

#define fst first
#define snd second
#define INF 0x3FFFFFFF
#define PI (2*acos(0))

using namespace std;

typedef long long ll;
typedef complex<double> pt;

int v[100];
int t[100];
int speed[20001];
int limit[20001];
int sum;

void fix(int idx) {
  if (idx > 0 && speed[idx] + 1 < speed[idx - 1]) {
    speed[idx - 1] = speed[idx] + 1;
    fix(idx - 1);
  }
  if (idx < sum && speed[idx] + 1 < speed[idx + 1]) {
    speed[idx + 1] = speed[idx] + 1;
    fix(idx + 1);
  }
}

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%d", &t[i]);
    sum += t[i];
  }
  for (int i = 0; i < n; i++) {
    scanf("%d", &v[i]);
  }
  
  limit[0] = 1000;
  int idx = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j <= t[i]; j++) {
      if (j == 0) {
        limit[idx] = v[i];
        speed[idx] = min(v[i], speed[idx]);
      } else {
        limit[idx] = v[i];
        speed[idx] = v[i];
      }
      idx++;
    }
    idx--;
  }
  speed[0] = 0;
  speed[sum] = 0;
  for (int i = 0; i <= sum; i++) {
    fix(i);
  }

  // for (int i = 0; i <= sum; i++) {
  //   cout << i << ":" << speed[i] << ":" << limit[i] << " ";
  // }
  // cout << endl;

  double res = 0;
  for (int i = 0; i < sum; i++) {
    res += speed[i];
    if (speed[i] < speed[i + 1] && limit[i] > speed[i]) res += 0.5;
    if (speed[i] == speed[i + 1] && limit[i] > speed[i]) res += 0.25;
    if (speed[i] > speed[i + 1]) res -= 0.5;
    // cout << res << endl;
  }
  printf("%.10lf\n", res);
  return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:32:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:34:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &t[i]);
                       ^
./Main.cpp:38:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &v[i]);
                       ^

ジャッジ結果