AtCoder Petrozavodsk Contest 001

Submission #2054987

Source codeソースコード

#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#define NDEBUG
#include "cout11.h"
#endif
#undef NDEBUG
#include <cassert>

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;

typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;

#define sz(a)  int((a).size())
#define pb  push_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n)  for(int var=0;var<(n);++var)
#define rep1(var,n)  for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n)  for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define ALL(c)  (c).begin(),(c).end()
#define RALL(c)  (c).rbegin(),(c).rend()
#define tr(i,c)  for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e)  ((s).find(e)!=(s).end())
#define mset(arr,val)  memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))

#define INTSPACE 12
char _buf[INTSPACE*1000000 + 3];

int loadint() {
    if (fgets(_buf, INTSPACE+3, stdin)==NULL) return 0;
    return atoi(_buf);
}
int loadvec(vector<int>& v, int N=-1) {
    if (N == -1) {
        N = loadint();
        if (N==0) return 0;
    }
    int bufsize = INTSPACE*N + 3;
    if (fgets(_buf, bufsize, stdin)==NULL) return 0;
    v.resize(N);

    int i=0;
    bool last = false;
    for (char *p=&_buf[0]; ;) {
        char *q = p;
        while (*q > ' ') ++q;
        if (*q == 0x0D || *q == 0x0A) last = true;
        *q = 0;
        v[i++] = atoi(p);
        if (last || i == N) break;
        p = q+1;
    }
    // assert(i <= N);
    return i;
}

bool solve(int N, vi& a, vi& b) {
    ll plus = 0, minus2 = 0, minus1 = 0;
    rep(i, N) {
        ll di = a[i] - b[i];
        if (di > 0) {
            plus += di;
        } else if (di < 0) {
            minus2 += -di / 2;
            minus1 += -di % 2;
        }
    }
    if (plus > minus2) return false;
    return true;
}

int main() {
    int N = loadint();
    vector<int> a(N), b(N);
    loadvec(a, N);
    loadvec(b, N);
    cout << (solve(N, a, b) ? "Yes":"No") << endl;
    return 0;
}

Submission

Task問題 B - Two Arrays
User nameユーザ名 naoya_t
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 300
Source lengthソースコード長 2307 Byte
File nameファイル名
Exec time実行時間 2 ms
Memory usageメモリ使用量 384 KB

Test case

Set

Set name Score得点 / Max score Cases
Sample - 0_000.txt,0_001.txt,0_002.txt
All 300 / 300 0_000.txt,0_001.txt,0_002.txt,1_003.txt,1_004.txt,1_005.txt,1_006.txt,1_007.txt,1_008.txt,1_009.txt,1_010.txt,1_011.txt,1_012.txt,1_013.txt,1_014.txt,1_015.txt,1_016.txt,1_017.txt,1_018.txt,1_019.txt,1_020.txt,1_021.txt,1_022.txt,1_023.txt,1_024.txt,1_025.txt,1_026.txt,1_027.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
0_000.txt AC 1 ms 256 KB
0_001.txt AC 1 ms 256 KB
0_002.txt AC 1 ms 256 KB
1_003.txt AC 2 ms 384 KB
1_004.txt AC 2 ms 384 KB
1_005.txt AC 2 ms 384 KB
1_006.txt AC 2 ms 384 KB
1_007.txt AC 2 ms 384 KB
1_008.txt AC 2 ms 384 KB
1_009.txt AC 2 ms 384 KB
1_010.txt AC 2 ms 384 KB
1_011.txt AC 2 ms 384 KB
1_012.txt AC 2 ms 384 KB
1_013.txt AC 2 ms 384 KB
1_014.txt AC 2 ms 384 KB
1_015.txt AC 2 ms 384 KB
1_016.txt AC 2 ms 384 KB
1_017.txt AC 2 ms 384 KB
1_018.txt AC 2 ms 384 KB
1_019.txt AC 2 ms 384 KB
1_020.txt AC 2 ms 384 KB
1_021.txt AC 2 ms 384 KB
1_022.txt AC 2 ms 384 KB
1_023.txt AC 2 ms 384 KB
1_024.txt AC 2 ms 384 KB
1_025.txt AC 2 ms 384 KB
1_026.txt AC 2 ms 384 KB
1_027.txt AC 2 ms 384 KB