Submission #4925491

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Source Code Expand

#include <bits/stdc++.h>

#define ARC(i, a, b) for(int i = (a); i < (b); ++i)
#define RC(i, n) ARC(i, 0, n)
#define ARCH(i, a, b) for(int i = (a) - 1; i >= (b); --i)
#define RCH(i, n) ARCH(i, n, 0)

template<typename T> T ant(const T &a, const T &b){ return a > b ? a : b; }
template<typename T> T ont(const T &a, const T &b){ return a < b ? a : b; }
template<typename T> T rng(const T &a, const T &b){ return a > b ? a - b : b - a; }
template<typename T> T &anth(T &a, const T &b){ return a = ant(a, b); }
template<typename T> T &onth(T &a, const T &b){ return a = ont(a, b); }

template<typename T> T make_v(T val){ return val; }
template<typename... Ts> auto make_v(size_t n, Ts... ts){ return std::vector<decltype(make_v(ts...))>(n, make_v(ts...)); }

int main(){
	int a, b;
	scanf("%d%d", &a, &b);
	printf("%d\n", a - b);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &a, &b);
                       ^

Judge Result