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답안 #859881

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
859881 2023-10-11T01:07:58 Z chrispham258 송금 (JOI19_remittance) C++17
100 / 100
 33 ms 16504 KB 
/* Pham Ngoc Tho aka Chis Pham                           */
/* [Author : Pham Ngoc Tho] - THPT Chuyen Nguyen Du      */
/* [ 2024 - 12TH GO VOI 24 ] - From Nguyen Du with love  */
 
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
 
#include<bits/stdc++.h>
using namespace std;
 
#define oo 0x3f
#define ff first
#define ss second
#define endl "\n"
#define ins insert
#define chis id<<1
#define pham (id<<1) + 1
#define sqr(x) ((x) * 1ll * (x))
#define gcd(a, b) __gcd(a, b)
#define pb push_back
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(),x.rend()
#define repu(i, x, n) for(int i = x; i <= n; ++i)
#define repd(i, n, x) for(int i = n; i >= x; --i)
#define reset(x, val) memset(x, val, sizeof(x))
 
typedef double db;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll, ll> pll;
 
template<class T> bool getbit(T val, int i) { return (val >> i) & 1; }
template<class T> int cntbit(T val)        { return val == 0 ? 0 : cntbit(val >> 1) + (val & 1); }
template<class T> ll fpow(T a, const T b) { ll res = 1, x = a, y = b; while(y){if(y & 1)res *= x; x = x * x; y>>=1;}; return res; }
template<class T> ll modfpow(T a, T b, const T &m) { ll res = 1, x = a, y = b; x %= m; while(y){if(y & 1){res *= x; res %= m;}; x = x * x; x %= m; y >>= 1; } return res % m; }
template<class T> T lcm(T &a, T &b) { return a / gcd(a, b) * b; }
 
const int mod = 1e9 + 7;
const int INF = 1e9 + 7;
const ll LNF = 1e18 + 7;
 
inline char gc() { static char buf[1 << 23]; static size_t bc, be; if(bc >= be){ buf[0] = 0, bc = 0; be = fread(buf, 1, sizeof(buf), stdin); } return buf[bc++]; }
ll readLL() { ll a, c; while ((a = gc()) < 20); if (a == '-') return -readLL(); while ((c = gc()) >= 48) a = a * 10 + c - 480; return a - 48; }
int readInt() { int a, c; while ((a = gc()) < 10); if (a == '-') return -readInt(); while ((c = gc()) >= 48) a = a * 10 + c - 480; return a - 48; }
 
mt19937 RND(time(nullptr));
ll rnd(ll l, ll r)
{
    assert(l <= r);ll L = l, R = r;
    ll aft = (L + RND() * 1LL % (R - L + 1));
    return aft;
}
 
#define TASK "name"
#define FILE "DEBUG"
void setIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    if(fopen(FILE".INP", "r")){freopen(FILE".INP", "r", stdin);freopen(FILE".OUT", "w", stdout);}
    if(fopen(TASK".INP", "r")){freopen(TASK".INP", "r", stdin);freopen(TASK".OUT", "w", stdout);}
}
 
template<class T> T multi(const T &a, const T &b) { T res = (a*b)%mod; return res;}
template<class T> bool umax(T &a, T b) { if(a < b){ a = b; return 1;} else return 0;}
template<class T> bool umin(T &a, T b) { if(a > b){ a = b; return 1;} else return 0;}
 
const int NmX = 1e6 + 7;
const int dx[] = {0, 0, 1, -1};
const int dy[] = {1, -1, 0, 0};
 
int n, s, t;
pii a[NmX];
 
void read()
{
    //cin >> n;
    n = readInt();
  	repu(i, 1, n){
        //cin >> a[i].ff >> a[i].ss;
        a[i].ff = readInt();
        a[i].ss = readInt();
		s += a[i].ff;
        t += a[i].ss;
    }
}
 
void process()
{
    if(t == 0){
        cout << (s == 0 ? "Yes" : "No");
        return;
    }
    while(1){
        bool dk = 0;
        repu(i, 1, n) if(a[i].ff > a[i].ss){
            int nxt = (i == n ? 1 : i + 1);
            int val = (a[i].ff - a[i].ss);
 
            val = val/2 + val % 2;
            
            a[i].ff -= 2 * val;
            a[nxt].ff += val;
            dk = 1; 
        }
 
        if(!dk) break;
    }
 
    bool dk = 1;
    repu(i, 1, n) dk &= (a[i].ff == a[i].ss);
    cout << (dk ? "Yes" : "No");
}
 
main()
{
    setIO();
    int test = 1;
    // cin >> test;
    while(test--)
    {
        read();
        process();
    }
    
    cerr << "Time elapsed: " << (1.0 * clock()/CLOCKS_PER_SEC) * 1000 << "ms.\n";
    return 0;
}

Compilation message

remittance.cpp:116:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  116 | main()
      | ^~~~
remittance.cpp: In function 'void setIO()':
remittance.cpp:61:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     if(fopen(FILE".INP", "r")){freopen(FILE".INP", "r", stdin);freopen(FILE".OUT", "w", stdout);}
      |                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
remittance.cpp:61:71: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     if(fopen(FILE".INP", "r")){freopen(FILE".INP", "r", stdin);freopen(FILE".OUT", "w", stdout);}
      |                                                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
remittance.cpp:62:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |     if(fopen(TASK".INP", "r")){freopen(TASK".INP", "r", stdin);freopen(TASK".OUT", "w", stdout);}
      |                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
remittance.cpp:62:71: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |     if(fopen(TASK".INP", "r")){freopen(TASK".INP", "r", stdin);freopen(TASK".OUT", "w", stdout);}
      |                                                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2392 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2392 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 0 ms 2396 KB Output is correct
41 Correct 1 ms 2392 KB Output is correct
42 Correct 0 ms 2392 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 0 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 1 ms 2392 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 0 ms 2396 KB Output is correct
49 Correct 1 ms 2392 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2392 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 0 ms 2396 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 1 ms 2392 KB Output is correct
57 Correct 1 ms 2600 KB Output is correct
58 Correct 0 ms 2396 KB Output is correct
59 Correct 1 ms 2548 KB Output is correct
60 Correct 0 ms 2396 KB Output is correct
61 Correct 0 ms 2396 KB Output is correct
62 Correct 0 ms 2396 KB Output is correct

Subtask #3
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2392 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 0 ms 2396 KB Output is correct
41 Correct 1 ms 2392 KB Output is correct
42 Correct 0 ms 2392 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 0 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 1 ms 2392 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 0 ms 2396 KB Output is correct
49 Correct 1 ms 2392 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2392 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 0 ms 2396 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 1 ms 2392 KB Output is correct
57 Correct 1 ms 2600 KB Output is correct
58 Correct 0 ms 2396 KB Output is correct
59 Correct 1 ms 2548 KB Output is correct
60 Correct 0 ms 2396 KB Output is correct
61 Correct 0 ms 2396 KB Output is correct
62 Correct 0 ms 2396 KB Output is correct
63 Correct 31 ms 16472 KB Output is correct
64 Correct 15 ms 12892 KB Output is correct
65 Correct 33 ms 16488 KB Output is correct
66 Correct 18 ms 12892 KB Output is correct
67 Correct 25 ms 15004 KB Output is correct
68 Correct 20 ms 15964 KB Output is correct
69 Correct 30 ms 16504 KB Output is correct
70 Correct 20 ms 13144 KB Output is correct
71 Correct 25 ms 15160 KB Output is correct
72 Correct 19 ms 15964 KB Output is correct
73 Correct 31 ms 16488 KB Output is correct
74 Correct 18 ms 12888 KB Output is correct
75 Correct 21 ms 15008 KB Output is correct
76 Correct 19 ms 15964 KB Output is correct
77 Correct 30 ms 16472 KB Output is correct
78 Correct 17 ms 16472 KB Output is correct
79 Correct 17 ms 16488 KB Output is correct
80 Correct 22 ms 16476 KB Output is correct
81 Correct 25 ms 16476 KB Output is correct
82 Correct 10 ms 12892 KB Output is correct
83 Correct 11 ms 12952 KB Output is correct
84 Correct 10 ms 12892 KB Output is correct
85 Correct 31 ms 16480 KB Output is correct
86 Correct 31 ms 16500 KB Output is correct
87 Correct 18 ms 16472 KB Output is correct
88 Correct 23 ms 16476 KB Output is correct