/***************************************************************
* Author : Nguyen Trong Van Viet *
* Age : 17 *
* School : 11T2 Le Khiet High School for the Gifted *
* Hometown : Quang Ngai , Viet Nam . *
*code for dream,code for Truong Thi My Duyen :) yeu nhieu lam !*
***************************************************************/
#define TASK "text"
#define INPUT TASK".INP"
#define OUTPUT TASK".OUT"
bool multitest = 0;
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define db double
#define ve vector
#define vi vector<int>
#define vll vector<ll>
#define str string
#define pb push_back
#define pk pop_back
#define el '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define mp make_pair
#define fi first
#define se second
#define FOR(i,a,b) for(int i=(int)(a);i<=(int)(b);i++)
#define FORD(i,a,b) for(int i=(int)(a);i>=(int)(b);i--)
#define FORN(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define all(a) a.begin(),a.end()
#define btpc __builtin_popcountll
#define tct template<typename T>
ll lg(ll a){return __lg(a);}
ll sq(ll a){return a*a;}
ll gcd(ll a , ll b){return __gcd(a,b);}
ll lcm(ll a, ll b){return a/gcd(a,b)*b;}
tct bool mini(T& a,const T& b){return (a>b)?a=b,1:0;}
tct bool maxi(T& a,const T& b){return (a<b)?a=b,1:0;}
tct void prt(T a[] ,int n ){FOR(i,1,n)cout<<a[i]<<" ";cout<<el;}
// end of template
int xx[] = {0,0,-1,0,1};
int yy[] = {0,-1,0,1,0};
const db PI = acos(-1), EPS = 1e-9;
const ll inf = 1e17, cs = 330, sm = 1e9+7;
const int N = 2e5+5, oo = 2e9, LO = 17;
int n , m;
void doc()
{
cin>>n>> m;
ll res= 0 ;
FOR(i,1,m)
{
int x, y, w; cin>>x>>y>>w;
res+=w ;
}
cout<<res;
}
void xuly()
{
}
signed main()
{
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
if(fopen(INPUT,"r"))
{
freopen(INPUT ,"r",stdin);
freopen(OUTPUT,"w",stdout);
}
int test = 1;
if(multitest)cin>>test ;
FOR(i,1,test)
{
doc() ;
xuly() ;
}
cerr<<el<<"Duyen yeu Viet nhieu lam ! "<<el<<"Time elapsed : " << clock() <<"ms"<<el;
}
Compilation message
fish.cpp: In function 'int main()':
fish.cpp:79:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
79 | freopen(INPUT ,"r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~
fish.cpp:80:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
80 | freopen(OUTPUT,"w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccVcoVFc.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccYXCigc.o:fish.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccVcoVFc.o: in function `main':
grader.cpp:(.text.startup+0x25e): undefined reference to `max_weights(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status
